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Dr. Takahiro Tabuchi
Osaka International Cancer Institute

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Journal article
Published: 26 August 2021 in SSM - Population Health
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During crisis, trust has been found to have a buffering effect in the prevention of the deterioration of mental well-being, as trust is considered to reflect the individual's capability to gain social resources including both formal and informal support. Additionally, during the COVID-19 pandemic, political trust has been found to reduce anxiety. Taking these findings into account, this study explores the association of generalised and political trust with mental well-being on current postpartum women who were particularly at risk due to a decline in social support leaving them an increased burden of caring newborns during the pandemic. We conducted a crosssectional survey in October 2020 in Japan (n=558). Depressive symptoms (above the cutoff of the Edinburgh Postnatal Depression Scale (EPDS)) and Fear of Coronavirus-19 Scale (FCV–19S) scores were used as mental well-being indicators. Generalised and political trust were captured by binary variables. Results of regression analyses, in which covariates were fully adjusted, showed that higher generalised trust had a statistically significant association with lower possibility of depressive symptoms and a lower FCV-19S score, while political trust was not significantly associated with either indicator. For further understanding, we divided respondents into two groups; women living in cities where higher COVID-19 cases were reported and women living in areas with lower COVID-19 cases, to test whether the role of trust differs depending on the infection spread status. It was found that a higher generalised trust was significantly associated with a lower probability of having depressive symptoms in the areas with lower COVID-19 cases. However, statistical significance was not observed in the areas with high COVID-19 cases. This highlighted that even postpartum women who were normally capable of receiving formal and informal social support need to be taken care of in the current situation.

ACS Style

Midori Matsushima; Kanami Tsuno; Sumiyo Okawa; Ai Hori; Takahiro Tabuchi. Trust and well-being of postpartum women during the COVID-19 crisis: Depression and fear of COVID-19. SSM - Population Health 2021, 15, 100903 .

AMA Style

Midori Matsushima, Kanami Tsuno, Sumiyo Okawa, Ai Hori, Takahiro Tabuchi. Trust and well-being of postpartum women during the COVID-19 crisis: Depression and fear of COVID-19. SSM - Population Health. 2021; 15 ():100903.

Chicago/Turabian Style

Midori Matsushima; Kanami Tsuno; Sumiyo Okawa; Ai Hori; Takahiro Tabuchi. 2021. "Trust and well-being of postpartum women during the COVID-19 crisis: Depression and fear of COVID-19." SSM - Population Health 15, no. : 100903.

Journal article
Published: 04 August 2021 in International Journal of Environmental Research and Public Health
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The coronavirus disease 2019 (COVID-19) pandemic is assumed to have caused an increase in the number of socially isolated people. However, the prevalence of social isolation during the pandemic has not been well studied, particularly among Asian populations. This study investigated changes in the prevalence of social isolation caused by the COVID-19 pandemic and examined its association with mental health among the general Japanese population. Data were obtained from a large-scale, web-based nationwide survey conducted from August to September 2020 (n = 28,000; aged 15–79 years). Social isolation was defined as less frequent contact with people other than co-residing family members. We assessed the participants’ frequency of contact in January (before the pandemic) and August 2020 (during the pandemic). Mental health outcomes included psychological distress, suicidal ideation, loneliness, and fear of COVID-19. We analyzed the data of 25,482 respondents. The weighted prevalence (95% confidence interval) of social isolation was 21.2% (20.7–21.7%) and 27.9% (27.3–28.4%) before and during the pandemic, respectively. The prevalence of social isolation increased by 6.7 (6.3–7.0) percentage points during the pandemic. Older people and men had the greatest increase in the prevalence of social isolation. People who became socially isolated during the pandemic had greater loneliness and fear of COVID-19 than those who were consistently not socially isolated since before the pandemic. This study suggested that social isolation had increased during the COVID-19 pandemic in Japan. Our findings highlight the importance of developing immediate measures against social isolation to maintain good mental health.

ACS Style

Hiroshi Murayama; Ryo Okubo; Takahiro Tabuchi. Increase in Social Isolation during the COVID-19 Pandemic and Its Association with Mental Health: Findings from the JACSIS 2020 Study. International Journal of Environmental Research and Public Health 2021, 18, 8238 .

AMA Style

Hiroshi Murayama, Ryo Okubo, Takahiro Tabuchi. Increase in Social Isolation during the COVID-19 Pandemic and Its Association with Mental Health: Findings from the JACSIS 2020 Study. International Journal of Environmental Research and Public Health. 2021; 18 (16):8238.

Chicago/Turabian Style

Hiroshi Murayama; Ryo Okubo; Takahiro Tabuchi. 2021. "Increase in Social Isolation during the COVID-19 Pandemic and Its Association with Mental Health: Findings from the JACSIS 2020 Study." International Journal of Environmental Research and Public Health 18, no. 16: 8238.

Dermatology
Published: 28 July 2021 in PLOS Neglected Tropical Diseases
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Recent evidence suggests that, in some foci, elimination of onchocerciasis from Africa may be feasible with mass drug administration (MDA) of ivermectin. To achieve continental elimination of transmission, mapping surveys will need to be conducted across all implementation units (IUs) for which endemicity status is currently unknown. Using boosted regression tree models with optimised hyperparameter selection, we estimated environmental suitability for onchocerciasis at the 5 × 5-km resolution across Africa. In order to classify IUs that include locations that are environmentally suitable, we used receiver operating characteristic (ROC) analysis to identify an optimal threshold for suitability concordant with locations where onchocerciasis has been previously detected. This threshold value was then used to classify IUs (more suitable or less suitable) based on the location within the IU with the largest mean prediction. Mean estimates of environmental suitability suggest large areas across West and Central Africa, as well as focal areas of East Africa, are suitable for onchocerciasis transmission, consistent with the presence of current control and elimination of transmission efforts. The ROC analysis identified a mean environmental suitability index of 0·71 as a threshold to classify based on the location with the largest mean prediction within the IU. Of the IUs considered for mapping surveys, 50·2% exceed this threshold for suitability in at least one 5 × 5-km location. The formidable scale of data collection required to map onchocerciasis endemicity across the African continent presents an opportunity to use spatial data to identify areas likely to be suitable for onchocerciasis transmission. National onchocerciasis elimination programmes may wish to consider prioritising these IUs for mapping surveys as human resources, laboratory capacity, and programmatic schedules may constrain survey implementation, and possibly delaying MDA initiation in areas that would ultimately qualify.

ACS Style

Elizabeth A. Cromwell; Joshua C. P. Osborne; Thomas R. Unnasch; Maria-Gloria Basáñez; Katherine M. Gass; Kira A. Barbre; Elex Hill; Kimberly B. Johnson; Katie M. Donkers; Shreya Shirude; Chris A. Schmidt; Victor Adekanmbi; Olatunji O. Adetokunboh; Mohsen Afarideh; Ehsan Ahmadpour; Muktar Beshir Ahmed; Temesgen Yihunie Akalu; Ziyad Al-Aly; Fahad Mashhour Alanezi; Turki M. Alanzi; Vahid Alipour; Catalina Liliana Andrei; Fereshteh Ansari; Mustafa Geleto Ansha; Davood Anvari; Seth Christopher Yaw Appiah; Jalal Arabloo; Benjamin F. Arnold; Marcel Ausloos; Martin Amogre Ayanore; Atif Amin Baig; Maciej Banach; Aleksandra Barac; Till Winfried Bärnighausen; Mohsen Bayati; Krittika Bhattacharyya; Zulfiqar A. Bhutta; Sadia Bibi; Ali Bijani; Somayeh Bohlouli; Mahdi Bohluli; Oliver J. Brady; Nicola Luigi Bragazzi; Zahid A. Butt; Felix Carvalho; Souranshu Chatterjee; Vijay Kumar Chattu; Soosanna Kumary Chattu; Natalie Maria Cormier; Saad M. A. Dahlawi; Giovanni Damiani; Farah Daoud; Aso Mohammad Darwesh; Ahmad Daryani; Kebede Deribe; Samath Dhamminda Dharmaratne; Daniel Diaz; Hoa Thi Do; Maysaa El Sayed Zaki; Maha El Tantawi; Demelash Abewa Elemineh; Anwar Faraj; Majid Fasihi Harandi; Yousef Fatahi; Valery L. Feigin; Eduarda Fernandes; Nataliya A. Foigt; Masoud Foroutan; Richard Charles Franklin; Mohammed Ibrahim Mohialdeen Gubari; Davide Guido; Yuming Guo; Arvin Haj-Mirzaian; Kanaan Hamagharib Abdullah; Samer Hamidi; Claudiu Herteliu; Hagos Degefa de Hidru; Tarig B. Higazi; Naznin Hossain; Mehdi Hosseinzadeh; Mowafa Househ; Olayinka Stephen Ilesanmi; Milena D. Ilic; Irena M. Ilic; Usman Iqbal; Seyed Sina Naghibi Irvani; Ravi Prakash Jha; Farahnaz Joukar; Jacek Jerzy Jozwiak; Zubair Kabir; Leila R. Kalankesh; Rohollah Kalhor; Behzad Karami Matin; Salah Eddin Karimi; Amir Kasaeian; Taras Kavetskyy; Gbenga A. Kayode; Ali Kazemi Karyani; Abraham Getachew Kelbore; Maryam Keramati; Rovshan Khalilov; Ejaz Ahmad Khan; Nuruzzaman Nuruzzaman Khan; Khaled Khatab; Mona M. Khater; Neda Kianipour; Kelemu Tilahun Kibret; Yun Jin Kim; Soewarta Kosen; Kris J. Krohn; Dian Kusuma; Carlo La Vecchia; Van Charles Lansingh; Paul H. Lee; Kate E. LeGrand; Shanshan Li; Joshua Longbottom; Hassan Magdy Abd El Razek; Muhammed Magdy Abd El Razek; Afshin Maleki; Abdullah A. Mamun; Ali Manafi; Navid Manafi; Mohammad Ali Mansournia; Francisco Rogerlândio Martins-Melo; Mohsen Mazidi; Colm McAlinden; Birhanu Geta Meharie; Walter Mendoza; Endalkachew Worku Mengesha; Desalegn Tadese Mengistu; Seid Tiku Mereta; Tomislav Mestrovic; Ted R. Miller; Mohammad Miri; Masoud Moghadaszadeh; Abdollah Mohammadian-Hafshejani; Reza Mohammadpourhodki; Shafiu Mohammed; Salahuddin Mohammed; Masoud Moradi; Rahmatollah Moradzadeh; Paula Moraga; Jonathan F. Mosser; Mehdi Naderi; Ahamarshan Jayaraman Nagarajan; Gurudatta Naik; Ionut Negoi; Cuong Tat Nguyen; Huong Lan Thi Nguyen; Trang Huyen Nguyen; Rajan Nikbakhsh; Bogdan Oancea; Tinuke O. Olagunju; Andrew T. Olagunju; Ahmed Omar Bali; Obinna E. Onwujekwe; Adrian Pana; Hadi Pourjafar; Fakher Rahim; Mohammad Hifz Ur Rahman; Priya Rathi; Salman Rawaf; David Laith Rawaf; Reza Rawassizadeh; Serge Resnikoff; Melese Abate Reta; Aziz Rezapour; Enrico Rubagotti; Salvatore Rubino; Ehsan Sadeghi; Abedin Saghafipour; S. Mohammad Sajadi; Abdallah M. Samy; Rodrigo Sarmiento-Suárez; Monika Sawhney; Megan F. Schipp; Amira A. Shaheen; Masood Ali Shaikh; Morteza Shamsizadeh; Kiomars Sharafi; Aziz Sheikh; B. Suresh Kumar Shetty; Jae Il Shin; K. M. Shivakumar; Biagio Simonetti; Jasvinder A. Singh; Eirini Skiadaresi; Amin Soheili; Shahin Soltani; Emma Elizabeth Spurlock; Mu’Awiyyah Babale Sufiyan; Takahiro Tabuchi; Leili Tapak; Robert L. Thompson; Alan J. Thomson; Eugenio Traini; Bach Xuan Tran; Irfan Ullah; Saif Ullah; Chigozie Jesse Uneke; Bhaskaran Unnikrishnan; Olalekan A. Uthman; Natalie V. S. Vinkeles Melchers; Francesco S. Violante; Haileab Fekadu Wolde; Tewodros Eshete Wonde; Tomohide Yamada; Sanni Yaya; Vahid Yazdi-Feyzabadi; Paul Yip; Naohiro Yonemoto; Hebat-Allah Salah A. Yousof; Chuanhua Yu; Yong Yu; Hasan Yusefzadeh; Leila Zaki; Sojib Bin Zaman; Maryam Zamanian; Zhi-Jiang Zhang; Yunquan Zhang; Arash Ziapour; Simon I. Hay; David M. Pigott. Predicting the environmental suitability for onchocerciasis in Africa as an aid to elimination planning. PLOS Neglected Tropical Diseases 2021, 15, e0008824 .

AMA Style

Elizabeth A. Cromwell, Joshua C. P. Osborne, Thomas R. Unnasch, Maria-Gloria Basáñez, Katherine M. Gass, Kira A. Barbre, Elex Hill, Kimberly B. Johnson, Katie M. Donkers, Shreya Shirude, Chris A. Schmidt, Victor Adekanmbi, Olatunji O. Adetokunboh, Mohsen Afarideh, Ehsan Ahmadpour, Muktar Beshir Ahmed, Temesgen Yihunie Akalu, Ziyad Al-Aly, Fahad Mashhour Alanezi, Turki M. Alanzi, Vahid Alipour, Catalina Liliana Andrei, Fereshteh Ansari, Mustafa Geleto Ansha, Davood Anvari, Seth Christopher Yaw Appiah, Jalal Arabloo, Benjamin F. Arnold, Marcel Ausloos, Martin Amogre Ayanore, Atif Amin Baig, Maciej Banach, Aleksandra Barac, Till Winfried Bärnighausen, Mohsen Bayati, Krittika Bhattacharyya, Zulfiqar A. Bhutta, Sadia Bibi, Ali Bijani, Somayeh Bohlouli, Mahdi Bohluli, Oliver J. Brady, Nicola Luigi Bragazzi, Zahid A. Butt, Felix Carvalho, Souranshu Chatterjee, Vijay Kumar Chattu, Soosanna Kumary Chattu, Natalie Maria Cormier, Saad M. A. Dahlawi, Giovanni Damiani, Farah Daoud, Aso Mohammad Darwesh, Ahmad Daryani, Kebede Deribe, Samath Dhamminda Dharmaratne, Daniel Diaz, Hoa Thi Do, Maysaa El Sayed Zaki, Maha El Tantawi, Demelash Abewa Elemineh, Anwar Faraj, Majid Fasihi Harandi, Yousef Fatahi, Valery L. Feigin, Eduarda Fernandes, Nataliya A. Foigt, Masoud Foroutan, Richard Charles Franklin, Mohammed Ibrahim Mohialdeen Gubari, Davide Guido, Yuming Guo, Arvin Haj-Mirzaian, Kanaan Hamagharib Abdullah, Samer Hamidi, Claudiu Herteliu, Hagos Degefa de Hidru, Tarig B. Higazi, Naznin Hossain, Mehdi Hosseinzadeh, Mowafa Househ, Olayinka Stephen Ilesanmi, Milena D. Ilic, Irena M. Ilic, Usman Iqbal, Seyed Sina Naghibi Irvani, Ravi Prakash Jha, Farahnaz Joukar, Jacek Jerzy Jozwiak, Zubair Kabir, Leila R. Kalankesh, Rohollah Kalhor, Behzad Karami Matin, Salah Eddin Karimi, Amir Kasaeian, Taras Kavetskyy, Gbenga A. Kayode, Ali Kazemi Karyani, Abraham Getachew Kelbore, Maryam Keramati, Rovshan Khalilov, Ejaz Ahmad Khan, Nuruzzaman Nuruzzaman Khan, Khaled Khatab, Mona M. Khater, Neda Kianipour, Kelemu Tilahun Kibret, Yun Jin Kim, Soewarta Kosen, Kris J. Krohn, Dian Kusuma, Carlo La Vecchia, Van Charles Lansingh, Paul H. Lee, Kate E. LeGrand, Shanshan Li, Joshua Longbottom, Hassan Magdy Abd El Razek, Muhammed Magdy Abd El Razek, Afshin Maleki, Abdullah A. Mamun, Ali Manafi, Navid Manafi, Mohammad Ali Mansournia, Francisco Rogerlândio Martins-Melo, Mohsen Mazidi, Colm McAlinden, Birhanu Geta Meharie, Walter Mendoza, Endalkachew Worku Mengesha, Desalegn Tadese Mengistu, Seid Tiku Mereta, Tomislav Mestrovic, Ted R. Miller, Mohammad Miri, Masoud Moghadaszadeh, Abdollah Mohammadian-Hafshejani, Reza Mohammadpourhodki, Shafiu Mohammed, Salahuddin Mohammed, Masoud Moradi, Rahmatollah Moradzadeh, Paula Moraga, Jonathan F. Mosser, Mehdi Naderi, Ahamarshan Jayaraman Nagarajan, Gurudatta Naik, Ionut Negoi, Cuong Tat Nguyen, Huong Lan Thi Nguyen, Trang Huyen Nguyen, Rajan Nikbakhsh, Bogdan Oancea, Tinuke O. Olagunju, Andrew T. Olagunju, Ahmed Omar Bali, Obinna E. Onwujekwe, Adrian Pana, Hadi Pourjafar, Fakher Rahim, Mohammad Hifz Ur Rahman, Priya Rathi, Salman Rawaf, David Laith Rawaf, Reza Rawassizadeh, Serge Resnikoff, Melese Abate Reta, Aziz Rezapour, Enrico Rubagotti, Salvatore Rubino, Ehsan Sadeghi, Abedin Saghafipour, S. Mohammad Sajadi, Abdallah M. Samy, Rodrigo Sarmiento-Suárez, Monika Sawhney, Megan F. Schipp, Amira A. Shaheen, Masood Ali Shaikh, Morteza Shamsizadeh, Kiomars Sharafi, Aziz Sheikh, B. Suresh Kumar Shetty, Jae Il Shin, K. M. Shivakumar, Biagio Simonetti, Jasvinder A. Singh, Eirini Skiadaresi, Amin Soheili, Shahin Soltani, Emma Elizabeth Spurlock, Mu’Awiyyah Babale Sufiyan, Takahiro Tabuchi, Leili Tapak, Robert L. Thompson, Alan J. Thomson, Eugenio Traini, Bach Xuan Tran, Irfan Ullah, Saif Ullah, Chigozie Jesse Uneke, Bhaskaran Unnikrishnan, Olalekan A. Uthman, Natalie V. S. Vinkeles Melchers, Francesco S. Violante, Haileab Fekadu Wolde, Tewodros Eshete Wonde, Tomohide Yamada, Sanni Yaya, Vahid Yazdi-Feyzabadi, Paul Yip, Naohiro Yonemoto, Hebat-Allah Salah A. Yousof, Chuanhua Yu, Yong Yu, Hasan Yusefzadeh, Leila Zaki, Sojib Bin Zaman, Maryam Zamanian, Zhi-Jiang Zhang, Yunquan Zhang, Arash Ziapour, Simon I. Hay, David M. Pigott. Predicting the environmental suitability for onchocerciasis in Africa as an aid to elimination planning. PLOS Neglected Tropical Diseases. 2021; 15 (7):e0008824.

Chicago/Turabian Style

Elizabeth A. Cromwell; Joshua C. P. Osborne; Thomas R. Unnasch; Maria-Gloria Basáñez; Katherine M. Gass; Kira A. Barbre; Elex Hill; Kimberly B. Johnson; Katie M. Donkers; Shreya Shirude; Chris A. Schmidt; Victor Adekanmbi; Olatunji O. Adetokunboh; Mohsen Afarideh; Ehsan Ahmadpour; Muktar Beshir Ahmed; Temesgen Yihunie Akalu; Ziyad Al-Aly; Fahad Mashhour Alanezi; Turki M. Alanzi; Vahid Alipour; Catalina Liliana Andrei; Fereshteh Ansari; Mustafa Geleto Ansha; Davood Anvari; Seth Christopher Yaw Appiah; Jalal Arabloo; Benjamin F. Arnold; Marcel Ausloos; Martin Amogre Ayanore; Atif Amin Baig; Maciej Banach; Aleksandra Barac; Till Winfried Bärnighausen; Mohsen Bayati; Krittika Bhattacharyya; Zulfiqar A. Bhutta; Sadia Bibi; Ali Bijani; Somayeh Bohlouli; Mahdi Bohluli; Oliver J. Brady; Nicola Luigi Bragazzi; Zahid A. Butt; Felix Carvalho; Souranshu Chatterjee; Vijay Kumar Chattu; Soosanna Kumary Chattu; Natalie Maria Cormier; Saad M. A. Dahlawi; Giovanni Damiani; Farah Daoud; Aso Mohammad Darwesh; Ahmad Daryani; Kebede Deribe; Samath Dhamminda Dharmaratne; Daniel Diaz; Hoa Thi Do; Maysaa El Sayed Zaki; Maha El Tantawi; Demelash Abewa Elemineh; Anwar Faraj; Majid Fasihi Harandi; Yousef Fatahi; Valery L. Feigin; Eduarda Fernandes; Nataliya A. Foigt; Masoud Foroutan; Richard Charles Franklin; Mohammed Ibrahim Mohialdeen Gubari; Davide Guido; Yuming Guo; Arvin Haj-Mirzaian; Kanaan Hamagharib Abdullah; Samer Hamidi; Claudiu Herteliu; Hagos Degefa de Hidru; Tarig B. Higazi; Naznin Hossain; Mehdi Hosseinzadeh; Mowafa Househ; Olayinka Stephen Ilesanmi; Milena D. Ilic; Irena M. Ilic; Usman Iqbal; Seyed Sina Naghibi Irvani; Ravi Prakash Jha; Farahnaz Joukar; Jacek Jerzy Jozwiak; Zubair Kabir; Leila R. Kalankesh; Rohollah Kalhor; Behzad Karami Matin; Salah Eddin Karimi; Amir Kasaeian; Taras Kavetskyy; Gbenga A. Kayode; Ali Kazemi Karyani; Abraham Getachew Kelbore; Maryam Keramati; Rovshan Khalilov; Ejaz Ahmad Khan; Nuruzzaman Nuruzzaman Khan; Khaled Khatab; Mona M. Khater; Neda Kianipour; Kelemu Tilahun Kibret; Yun Jin Kim; Soewarta Kosen; Kris J. Krohn; Dian Kusuma; Carlo La Vecchia; Van Charles Lansingh; Paul H. Lee; Kate E. LeGrand; Shanshan Li; Joshua Longbottom; Hassan Magdy Abd El Razek; Muhammed Magdy Abd El Razek; Afshin Maleki; Abdullah A. Mamun; Ali Manafi; Navid Manafi; Mohammad Ali Mansournia; Francisco Rogerlândio Martins-Melo; Mohsen Mazidi; Colm McAlinden; Birhanu Geta Meharie; Walter Mendoza; Endalkachew Worku Mengesha; Desalegn Tadese Mengistu; Seid Tiku Mereta; Tomislav Mestrovic; Ted R. Miller; Mohammad Miri; Masoud Moghadaszadeh; Abdollah Mohammadian-Hafshejani; Reza Mohammadpourhodki; Shafiu Mohammed; Salahuddin Mohammed; Masoud Moradi; Rahmatollah Moradzadeh; Paula Moraga; Jonathan F. Mosser; Mehdi Naderi; Ahamarshan Jayaraman Nagarajan; Gurudatta Naik; Ionut Negoi; Cuong Tat Nguyen; Huong Lan Thi Nguyen; Trang Huyen Nguyen; Rajan Nikbakhsh; Bogdan Oancea; Tinuke O. Olagunju; Andrew T. Olagunju; Ahmed Omar Bali; Obinna E. Onwujekwe; Adrian Pana; Hadi Pourjafar; Fakher Rahim; Mohammad Hifz Ur Rahman; Priya Rathi; Salman Rawaf; David Laith Rawaf; Reza Rawassizadeh; Serge Resnikoff; Melese Abate Reta; Aziz Rezapour; Enrico Rubagotti; Salvatore Rubino; Ehsan Sadeghi; Abedin Saghafipour; S. Mohammad Sajadi; Abdallah M. Samy; Rodrigo Sarmiento-Suárez; Monika Sawhney; Megan F. Schipp; Amira A. Shaheen; Masood Ali Shaikh; Morteza Shamsizadeh; Kiomars Sharafi; Aziz Sheikh; B. Suresh Kumar Shetty; Jae Il Shin; K. M. Shivakumar; Biagio Simonetti; Jasvinder A. Singh; Eirini Skiadaresi; Amin Soheili; Shahin Soltani; Emma Elizabeth Spurlock; Mu’Awiyyah Babale Sufiyan; Takahiro Tabuchi; Leili Tapak; Robert L. Thompson; Alan J. Thomson; Eugenio Traini; Bach Xuan Tran; Irfan Ullah; Saif Ullah; Chigozie Jesse Uneke; Bhaskaran Unnikrishnan; Olalekan A. Uthman; Natalie V. S. Vinkeles Melchers; Francesco S. Violante; Haileab Fekadu Wolde; Tewodros Eshete Wonde; Tomohide Yamada; Sanni Yaya; Vahid Yazdi-Feyzabadi; Paul Yip; Naohiro Yonemoto; Hebat-Allah Salah A. Yousof; Chuanhua Yu; Yong Yu; Hasan Yusefzadeh; Leila Zaki; Sojib Bin Zaman; Maryam Zamanian; Zhi-Jiang Zhang; Yunquan Zhang; Arash Ziapour; Simon I. Hay; David M. Pigott. 2021. "Predicting the environmental suitability for onchocerciasis in Africa as an aid to elimination planning." PLOS Neglected Tropical Diseases 15, no. 7: e0008824.

Journal article
Published: 23 July 2021 in Journal of Medical Internet Research
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Background The use of telemedicine outpatient visits has increased dramatically during the COVID-19 pandemic in many countries. Although disparities in access to telemedicine by age and socioeconomic status (SES) have been well-documented, evidence is limited as to how these disparities changed during the COVID-19 pandemic. Moreover, the equity of patient access to telemedicine has been scarcely reported in Japan, despite the huge potential for telemedicine expansion. Objective We aimed to investigate changes due to age and SES disparities in telemedicine use during the COVID-19 pandemic in Japan. Methods Using data from a large internet survey conducted between August 25 and September 30, 2020, in Japan, we examined the associations of participant age and SES (educational attainment, urbanicity of residence, and income level) with their telemedicine use in the following two time periods during the pandemic: April 2020 and August-September 2020. Results Of the 24,526 participants aged 18 to 79 years (50.8% [n=12,446] women), the proportion of individuals who reported using telemedicine increased from 2.0% (n=497) in April 2020 to 4.7% (n=1159) in August-September 2020. After adjusting for potential confounders, younger individuals were more likely to use telemedicine than older individuals in April 2020. Although this pattern persisted in August-September 2020, we also observed a substantial increase in telemedicine use among individuals aged 70 to 79 years (adjusted rates, 0.2% in April 2020 vs 3.8% in August-September 2020; P<.001 after multiple comparisons). We found disparities in telemedicine use by SES in August-September 2020 that did not exist in April 2020. In August-September 2020, individuals with a university degree were more likely to use telemedicine than those with a high school diploma or less (adjusted rates, 6.6% vs 3.5%; P<.001). Individuals living in urban areas exhibited higher rates of telemedicine use than those living in rural areas only in August-September 2020 (adjusted rates, 5.2% vs 3.8%; P<.001). Disparities in telemedicine use by income level were not observed in either time period. Conclusions In general, younger individuals increased their use of telemedicine compared to older individuals during the pandemic, although individuals in their 70s also increased their use of telemedicine. Disparities in telemedicine use by educational attainment and urbanicity of residence widened during the COVID-19 pandemic.

ACS Style

Atsushi Miyawaki; Takahiro Tabuchi; Michael K Ong; Yusuke Tsugawa. Age and Social Disparities in the Use of Telemedicine During the COVID-19 Pandemic in Japan: Cross-sectional Study. Journal of Medical Internet Research 2021, 23, e27982 .

AMA Style

Atsushi Miyawaki, Takahiro Tabuchi, Michael K Ong, Yusuke Tsugawa. Age and Social Disparities in the Use of Telemedicine During the COVID-19 Pandemic in Japan: Cross-sectional Study. Journal of Medical Internet Research. 2021; 23 (7):e27982.

Chicago/Turabian Style

Atsushi Miyawaki; Takahiro Tabuchi; Michael K Ong; Yusuke Tsugawa. 2021. "Age and Social Disparities in the Use of Telemedicine During the COVID-19 Pandemic in Japan: Cross-sectional Study." Journal of Medical Internet Research 23, no. 7: e27982.

Journal article
Published: 05 July 2021 in BMJ Open
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Objective To investigate the factors associated with serious psychological distress (SPD) during the COVID-19 pandemic in Japan. Design Nationwide cross-sectional study using survey data. Setting Internet survey using sampling weights for national estimates conducted between 25 August and 30 September 2020 in Japan. Exposures Demographics (age, gender), socioeconomic status (income level, employment type, educational attainment, marital status, family composition and caregiving burden); the experience of domestic violence (DV), the state of emergency and fear of and stigma related to COVID-19. Main outcome measures Prevalence of SPD, defined as Kessler 6 Scale score ≥13. Results Among 25 482 respondents, 10.0% met the criteria of SPD. Overall, women (adjusted OR (aOR) 1.59; 95% CI 1.17 to 2.16; p=0.003), ages 15–29 (aOR 2.35 compared with ages 45–59 years; 95% CI 1.64 to 3.38; p<0.001), low-income level (aOR 1.70 compared with intermediate income; 95% CI 1.16 to 2.49; p=0.007), providing caregiving to family members (aOR 5.48; 95% CI 3.51 to 8.56; p<0.001), experiencing DV (aOR 5.72; 95% CI 3.81 to 8.59; p<0.001) and fear of COVID-19 (aOR 1.96; 95% CI 1.55 to 2.48; p<0.001) were associated with SPD. Among women aged 15–29 years, who have a higher risk of suicide during the COVID-19 pandemic in Japan, caregiving, DV, fear of COVID-19 and COVID-19-related stigma were associated with SPD. Conclusions Economic situation, caregiving burden, DV and fear of COVID-19 were independently associated with SPD during the COVID-19 pandemic. Among young women, similar factors, except economic situation, were associated with SPD. Targeted interventions based on age and gender may be more effective in mitigating the negative impact of the COVID-19 pandemic on the population’s mental health.

ACS Style

Takashi Yoshioka; Ryo Okubo; Takahiro Tabuchi; Satomi Odani; Tomohiro Shinozaki; Yusuke Tsugawa. Factors associated with serious psychological distress during the COVID-19 pandemic in Japan: a nationwide cross-sectional internet-based study. BMJ Open 2021, 11, e051115 .

AMA Style

Takashi Yoshioka, Ryo Okubo, Takahiro Tabuchi, Satomi Odani, Tomohiro Shinozaki, Yusuke Tsugawa. Factors associated with serious psychological distress during the COVID-19 pandemic in Japan: a nationwide cross-sectional internet-based study. BMJ Open. 2021; 11 (7):e051115.

Chicago/Turabian Style

Takashi Yoshioka; Ryo Okubo; Takahiro Tabuchi; Satomi Odani; Tomohiro Shinozaki; Yusuke Tsugawa. 2021. "Factors associated with serious psychological distress during the COVID-19 pandemic in Japan: a nationwide cross-sectional internet-based study." BMJ Open 11, no. 7: e051115.

Radiology and imaging
Published: 18 June 2021 in PLOS ONE
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Previous studies have reported conflicting results for the effect of overall treatment time with stereotactic body radiotherapy on tumor control in early-stage non-small-cell lung cancer. To examine this effect, we conducted a propensity score-weighted, retrospective, observational study at a single institution. We analyzed the data of 200 patients with early-stage non-small-cell lung cancer who underwent stereotactic body radiotherapy (48 Gy in 4 fractions) at our institution between January 2007 and October 2013. Patients were grouped into consecutive (overall treatment time = 4–5 days, n = 116) or non-consecutive treatment groups (overall treatment time = 6–10 days, n = 84). The outcomes of interest were local control and overall survival. The Cox regression model was used with propensity score and inverse probability of treatment weighting. The median overall treatment times in the consecutive and non-consecutive groups were 4 and 6 days, respectively. The 5-year local control and overall survival rates in the consecutive vs. the non-consecutive group were 86.3 vs. 77.2% and 55.5 vs. 51.8%, respectively. After propensity score weighting, consecutive stereotactic body radiotherapy was associated with positive local control (adjusted hazard ratio 0.30, 95% confidence interval 0.14–0.65; p = 0.002) and overall survival (adjusted hazard ratio 0.56, 95% confidence interval 0.34–0.91; p = 0.019) benefits. The prolonged overall treatment time of stereotactic body radiotherapy treatment negatively affected the outcomes of patients with early-stage non-small-cell lung cancer. To our knowledge, this is the first study to show that in patients with early-stage non-small-cell lung cancer treated with the same dose-fractionation regimen, consecutive stereotactic body radiotherapy has a more beneficial effect on tumor control than non-consecutive stereotactic body radiotherapy.

ACS Style

Toshiki Ikawa; Takahiro Tabuchi; Koji Konishi; Masahiro Morimoto; Takero Hirata; Naoyuki Kanayama; Kentaro Wada; Masayasu Toratani; Sumiyo Okawa; Kazuhiko Ogawa; Teruki Teshima. Prolonged overall treatment time negatively affects the outcomes of stereotactic body radiotherapy for early-stage non-small-cell lung cancer: A propensity score-weighted, single-center analysis. PLOS ONE 2021, 16, e0253203 .

AMA Style

Toshiki Ikawa, Takahiro Tabuchi, Koji Konishi, Masahiro Morimoto, Takero Hirata, Naoyuki Kanayama, Kentaro Wada, Masayasu Toratani, Sumiyo Okawa, Kazuhiko Ogawa, Teruki Teshima. Prolonged overall treatment time negatively affects the outcomes of stereotactic body radiotherapy for early-stage non-small-cell lung cancer: A propensity score-weighted, single-center analysis. PLOS ONE. 2021; 16 (6):e0253203.

Chicago/Turabian Style

Toshiki Ikawa; Takahiro Tabuchi; Koji Konishi; Masahiro Morimoto; Takero Hirata; Naoyuki Kanayama; Kentaro Wada; Masayasu Toratani; Sumiyo Okawa; Kazuhiko Ogawa; Teruki Teshima. 2021. "Prolonged overall treatment time negatively affects the outcomes of stereotactic body radiotherapy for early-stage non-small-cell lung cancer: A propensity score-weighted, single-center analysis." PLOS ONE 16, no. 6: e0253203.

Journal article
Published: 17 June 2021 in Vaccines
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The vaccine confidence index in Japan is one of the lowest worldwide. This study aimed to examine the proportion of COVID-19 vaccine hesitancy in the Japanese population using a larger sample and more robust statistical methods than previously, and to identify factors associated with vaccine hesitancy. We conducted a nationwide, cross-sectional Internet survey on 8–26 February 2021, and calculated the proportion and odds ratios for vaccine hesitancy. Among 23,142 responses analyzed, the proportion of COVID-19 vaccine hesitancy was 11.3% (10.9–11.7%). The proportion was higher among younger respondents and female respondents, and especially among younger female respondents (15.6%) compared with the lowest proportion among older male respondents (4.8%). The most cited reason for not getting vaccinated was concerns about adverse reactions in more than 70% of the respondents. The proportion of COVID-19 vaccine hesitancy in Japan was comparable to that in previous studies overseas, and the proportion among younger respondents was more than double that among older respondents. Factors associated with the hesitancy were female sex, living alone, low socioeconomic status, and presence of severe psychological distress, especially among older respondents. Thus, adequate measures should be taken to ensure that vaccines are delivered to people with these factors.

ACS Style

Ryo Okubo; Takashi Yoshioka; Satoko Ohfuji; Takahiro Matsuo; Takahiro Tabuchi. COVID-19 Vaccine Hesitancy and Its Associated Factors in Japan. Vaccines 2021, 9, 662 .

AMA Style

Ryo Okubo, Takashi Yoshioka, Satoko Ohfuji, Takahiro Matsuo, Takahiro Tabuchi. COVID-19 Vaccine Hesitancy and Its Associated Factors in Japan. Vaccines. 2021; 9 (6):662.

Chicago/Turabian Style

Ryo Okubo; Takashi Yoshioka; Satoko Ohfuji; Takahiro Matsuo; Takahiro Tabuchi. 2021. "COVID-19 Vaccine Hesitancy and Its Associated Factors in Japan." Vaccines 9, no. 6: 662.

Epidemiology
Published: 03 June 2021 in BMJ Open
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Objective Recently, there has been an increase in the number of people with dementia. However, no study has examined the association between community-level social support and the onset of incident dementia using multilevel survival analysis. Design A prospective cohort study. Participants and setting We analysed data pertaining to 15 313 (7381 men and 7932 women) community-dwelling adults aged 65 years or older who had not accessed long-term care insurance and were living in Aichi Prefecture (seven municipalities) in Japan. Primary and secondary outcome measures The association between community-level social support and onset of incident dementia was examined using the Japan Gerontological Evaluation Study, a prospective cohort study introduced in Japan in 2003. Incident dementia was assessed using Long-term Care Insurance records spanning 3436 days from the baseline survey. Results During the 10-year follow-up, the onset of incident dementia occurred in 1776 adults. Among older people, a 1% increase in community-level social support (in the form of receiving emotional support) was associated with an approximately 4% reduction in the risk of developing dementia, regardless of socio-demographic variables and health conditions (HR=0.96; 95% CI=0.94 to 0.99). Conclusions Receiving community-level social support in the form of emotional support is associated with a lower risk of developing incident dementia.

ACS Style

Yasuhiro Miyaguni; Takahiro Tabuchi; Jun Aida; Masashige Saito; Taishi Tsuji; Yuri Sasaki; Katsunori Kondo. Community social support and onset of dementia in older Japanese individuals: a multilevel analysis using the JAGES cohort data. BMJ Open 2021, 11, e044631 .

AMA Style

Yasuhiro Miyaguni, Takahiro Tabuchi, Jun Aida, Masashige Saito, Taishi Tsuji, Yuri Sasaki, Katsunori Kondo. Community social support and onset of dementia in older Japanese individuals: a multilevel analysis using the JAGES cohort data. BMJ Open. 2021; 11 (6):e044631.

Chicago/Turabian Style

Yasuhiro Miyaguni; Takahiro Tabuchi; Jun Aida; Masashige Saito; Taishi Tsuji; Yuri Sasaki; Katsunori Kondo. 2021. "Community social support and onset of dementia in older Japanese individuals: a multilevel analysis using the JAGES cohort data." BMJ Open 11, no. 6: e044631.

Original article
Published: 28 May 2021 in International Journal of Urology
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Objective To examine the association between hospital volume and postoperative 5-year survival for patients with prostate, kidney, and bladder cancer. Method Using Osaka Cancer Registry data, we identified 9285 patients who were diagnosed as having prostate, kidney, or bladder cancer and who underwent surgery between 2007 and 2011 in Osaka, Japan. The surgical hospital volume of each hospital was calculated and then divided into quartiles (high, medium, low, very low). We estimated the hazard ratios of hospital volume (quartiles) for 5-year survival using Cox proportional hazard models. Results For all three cancer sites, the mortality hazard of hospitals with the lowest hospital volume was significantly higher than that of hospitals with the highest volume. The difference in adjusted 5-year survival rates between hospitals with the highest and lowest hospital volume was 3.6% for prostate cancer, 6.6% for kidney cancer, and 13.3% for bladder cancer. Conclusion Hospital surgical volume seems to affect 5-year survival for patients with urological cancers, especially kidney and bladder cancer.

ACS Style

Kazuma Sugimoto; Takahiro Tabuchi; Sumiyo Okawa; Toshitaka Morishima; Shihoko Koyama; Masashi Nakayama; Kazuo Nishimura; Isao Miyashiro. Hospital volume and postoperative survival for three urological cancers: Prostate, kidney, and bladder. International Journal of Urology 2021, 28, 799 -805.

AMA Style

Kazuma Sugimoto, Takahiro Tabuchi, Sumiyo Okawa, Toshitaka Morishima, Shihoko Koyama, Masashi Nakayama, Kazuo Nishimura, Isao Miyashiro. Hospital volume and postoperative survival for three urological cancers: Prostate, kidney, and bladder. International Journal of Urology. 2021; 28 (8):799-805.

Chicago/Turabian Style

Kazuma Sugimoto; Takahiro Tabuchi; Sumiyo Okawa; Toshitaka Morishima; Shihoko Koyama; Masashi Nakayama; Kazuo Nishimura; Isao Miyashiro. 2021. "Hospital volume and postoperative survival for three urological cancers: Prostate, kidney, and bladder." International Journal of Urology 28, no. 8: 799-805.

Brief communication
Published: 19 April 2021 in Thorax
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We investigated how use of heated tobacco products (HTPs) affects tobacco cessation in a Japanese workplace. We offered cessation programmes for 158 tobacco users from November 2018 to April 2019 and surveyed the quitting rate in August 2019. Successful quitting was defined as stopping use of all kinds of nicotine-containing tobacco products. A Poisson regression analysis adjusted with inverse probability weighting showed that HTP users (either exclusive HTP users or dual users) were less likely than exclusive cigarette users to quit tobacco (risk ratio, 0.77; 95% CIs 0.61 to 0.97, p=0.024). The use of HTPs should not be recommended to assist in smoking cessation. Trial registration UMIN000034719.

ACS Style

Makiko Kanai; Osamu Kanai; Takahiro Tabuchi; Tadashi Mio. Association of heated tobacco product use with tobacco use cessation in a Japanese workplace: a prospective study. Thorax 2021, 76, 615 -617.

AMA Style

Makiko Kanai, Osamu Kanai, Takahiro Tabuchi, Tadashi Mio. Association of heated tobacco product use with tobacco use cessation in a Japanese workplace: a prospective study. Thorax. 2021; 76 (6):615-617.

Chicago/Turabian Style

Makiko Kanai; Osamu Kanai; Takahiro Tabuchi; Tadashi Mio. 2021. "Association of heated tobacco product use with tobacco use cessation in a Japanese workplace: a prospective study." Thorax 76, no. 6: 615-617.

Health policy
Published: 13 April 2021 in BMJ Open
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Objective To investigate the association between participation in government subsidies for domestic travel (subsidise up to 50% of all travel expenses) introduced nationally in Japan on 22 July 2020 and the incidence of symptoms indicative of COVID-19 infections. Design Cross-sectional analysis of nationally representative survey data. Setting Internet survey conducted between 25 August and 30 September 2020 in Japan. Sampling weights were used to calculate national estimates. Participants 25 482 survey respondents (50.3% (12 809) women; mean (SD) age, 48.8 (17.4) years). Main outcome measures Incidence rate of five symptoms indicative of the COVID-19 infection (high fever, sore throat, cough, headache, and smell and taste disorder) within the past month of the survey, after adjustment for characteristics of individuals and prefecture fixed effects (effectively comparing individuals living in the same prefecture). Results At the time of the survey, 3289 (12.9%) participated in the subsidy programme. After adjusting for potential confounders, we found that participants in the subsidy programme exhibited higher incidence of high fever (adjusted rate, 4.7% for participants vs 3.7% for non-participants; adjusted OR (aOR) 1.83; 95% CI 1.34 to 2.48; p<0.001), sore throat (19.8% vs 11.3%; aOR 2.09; 95% CI 1.37 to 3.19; p=0.002), cough (19.0% vs 11.3%; aOR 1.96; 95% CI 1.26 to 3.01; p=0.008), headache (29.2% vs 25.5%; aOR 1.24; 95% CI 1.08 to 1.44; p=0.006) and smell and taste disorder (2.6% vs 1.8%; aOR 1.98; 95% CI 1.15 to 3.40; p=0.01) compared with non-participants. These findings remained qualitatively unaffected by additional adjustment for the use of 17 preventative measures (eg, social distancing, wearing masks and handwashing) and fear against the COVID-19 infection. Conclusions The participation of the government subsidy programme for domestic travel was associated with a higher probability of exhibiting symptoms indicative of the COVID-19 infection.

ACS Style

Atsushi Miyawaki; Takahiro Tabuchi; Yasutake Tomata; Yusuke Tsugawa. Association between participation in the government subsidy programme for domestic travel and symptoms indicative of COVID-19 infection in Japan: cross-sectional study. BMJ Open 2021, 11, e049069 .

AMA Style

Atsushi Miyawaki, Takahiro Tabuchi, Yasutake Tomata, Yusuke Tsugawa. Association between participation in the government subsidy programme for domestic travel and symptoms indicative of COVID-19 infection in Japan: cross-sectional study. BMJ Open. 2021; 11 (4):e049069.

Chicago/Turabian Style

Atsushi Miyawaki; Takahiro Tabuchi; Yasutake Tomata; Yusuke Tsugawa. 2021. "Association between participation in the government subsidy programme for domestic travel and symptoms indicative of COVID-19 infection in Japan: cross-sectional study." BMJ Open 11, no. 4: e049069.

Research article
Published: 01 April 2021 in Journal of Dental Research
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The coronavirus disease 2019 (COVID-19) pandemic has led to economic contraction and significant restrictions on society. The shock to the economy could lead to a deterioration of physical health outcomes, including dental health. The present study investigated the association between worsened socioeconomic conditions due to the COVID-19 pandemic and dental pain in Japan. The mediating effects of psychological distress and oral health–related behaviors were also evaluated. Cross-sectional data from the Japan COVID-19 and Society Internet Survey conducted from August to September 2020 ( n = 25,482; age range, 15–79 y) were analyzed. Multivariable logistic regression models were fitted to evaluate the independent associations of household income reduction, work reduction, and job loss due to the COVID-19 pandemic with dental pain within a month. Dental pain was reported by 9.8%. Household income reduction, work reduction, and job loss were independently associated with dental pain after adjusting for confounders (odds ratios: 1.42 [95% confidence interval (CI), 1.28−1.57], 1.58 [95% CI, 1.41−1.76], 2.17 [95% CI, 1.64−2.88], respectively). The association related to household income reduction was mediated by psychological distress, postponing dental visits, toothbrushing behavior, and between-meals eating behavior by 21.3% (95% CI, 14.0−31.6), 12.4% (95% CI, 7.2−19.6), 1.5% (95% CI, −0.01 to 4.5), and 9.3% (95% CI, 5.4−15.2), respectively. Our findings showed that worsened socioeconomic conditions due to the COVID-19 pandemic deteriorated dental health. Policies that protect income and job loss may reduce dental health problems after the pandemic.

ACS Style

Y. Matsuyama; J. Aida; K. Takeuchi; S. Koyama; T. Tabuchi. Dental Pain and Worsened Socioeconomic Conditions Due to the COVID-19 Pandemic. Journal of Dental Research 2021, 100, 591 -598.

AMA Style

Y. Matsuyama, J. Aida, K. Takeuchi, S. Koyama, T. Tabuchi. Dental Pain and Worsened Socioeconomic Conditions Due to the COVID-19 Pandemic. Journal of Dental Research. 2021; 100 (6):591-598.

Chicago/Turabian Style

Y. Matsuyama; J. Aida; K. Takeuchi; S. Koyama; T. Tabuchi. 2021. "Dental Pain and Worsened Socioeconomic Conditions Due to the COVID-19 Pandemic." Journal of Dental Research 100, no. 6: 591-598.

Research article
Published: 30 March 2021 in PLOS ONE
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Background Combustible cigarettes have detrimental effects on periodontal disease. However, little evidence is available regarding new heated tobacco product (HTP) use and combined product use (both combustible cigarettes and HTPs). This study aimed to examine the association of combustible cigarettes, HTPs, and combined product use with periodontal disease simultaneously. Materials and methods This cross-sectional study was conducted using data from the 2019 arm of the longitudinal Japan “Society and New Tobacco” Internet Survey. Combustible cigarette users, HTP users, combined product users, never-users, and former users’ data were separately obtained. In the present study, the primary outcome was self-reported periodontal disease. We estimated adjusted prevalence ratios (PRs) and confidence intervals (CIs) using multivariable modified Poisson regression analysis after adjusting for 12 confounders. Results Of the 10,439 JASTIS respondents, the numbers of users of combustible cigarettes only, HTPs only, and both products were 1,304, 437, and 1,049, respectively. Compared with never-users, HTP use was significantly associated with the prevalence of self-reported periodontal diseases (PR 1.43, 95% CI 1.03–1.62). Moreover, former users, combustible cigarette users, and combined product users also showed significant associations (PR 1.56, 95% CI 1.35–1.80; PR 1.29, 95% CI 1.03–1.62; and PR 1.55, 95% CI 1.20–1.99, respectively). Conclusions Users of HTPs, combustible cigarettes, and combined products as well as former users were all significantly associated with a higher prevalence of periodontal diseases compared to never-users.

ACS Style

Takashi Yoshioka; Takahiro Tabuchi. Combustible cigarettes, heated tobacco products, combined product use, and periodontal disease: A cross-sectional JASTIS study. PLOS ONE 2021, 16, e0248989 .

AMA Style

Takashi Yoshioka, Takahiro Tabuchi. Combustible cigarettes, heated tobacco products, combined product use, and periodontal disease: A cross-sectional JASTIS study. PLOS ONE. 2021; 16 (3):e0248989.

Chicago/Turabian Style

Takashi Yoshioka; Takahiro Tabuchi. 2021. "Combustible cigarettes, heated tobacco products, combined product use, and periodontal disease: A cross-sectional JASTIS study." PLOS ONE 16, no. 3: e0248989.

Original research
Published: 19 March 2021 in Tobacco Control
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Objectives Japan is currently the biggest market of heated tobacco products (HTPs) in the world. Little is known about nicotine dependence among HTP users. Thus, the objective was to assess the association of type of tobacco use and time-to-first-use, a marker of nicotine dependence. Methods A cross-sectional analysis of the 2019 data from an internet cohort study was conducted. The analytical sample consisted of 2147 current (≥1 day use in the past 30 days) HTP and/or conventional cigarette users, aged 25+ years. Marginal structural binomial regression was used to estimate nicotine dependence prevalence ratios (PRs) for each category of tobacco use (exclusive daily cigarette, exclusive HTP (≥1 day), dual HTP+daily cigarette, dual HTP+non-daily cigarette), relative to exclusive, non-daily cigarette smoking. Results Using a 5 min cut-off for time-to-first-use, the prevalence of nicotine dependence was higher among dual users of HTP and daily cigarettes (PR=1.38; 95% CI: 1.05 to 1.82) and exclusive, daily cigarette users (PR=1.48; 95% CI: 1.15 to 1.91), relative to exclusive, non-daily cigarette users. However, nicotine dependence among exclusive HTP users, and dual HTP+non-daily cigarette users, did not differ from that of exclusive, non-daily cigarette users. When using 15 and 30 min cut-offs, all types of users, including exclusive HTP, had higher levels of nicotine dependence relative to exclusive, non-daily cigarette users. Conclusions Regardless of HTP use, daily cigarette users had higher prevalence of nicotine dependence compared with non-daily cigarette users. Exclusive HTP users had similar (or potentially higher) dependence compared with exclusive, non-daily cigarette users. Longitudinal studies are needed to interrogate the public health implications of growing HTP use worldwide.

ACS Style

Yan Kwan Lau; Sumiyo Okawa; Rafael Meza; Kota Katanoda; Takahiro Tabuchi. Nicotine dependence of cigarette and heated tobacco users in Japan, 2019: a cross-sectional analysis of the JASTIS Study. Tobacco Control 2021, 1 .

AMA Style

Yan Kwan Lau, Sumiyo Okawa, Rafael Meza, Kota Katanoda, Takahiro Tabuchi. Nicotine dependence of cigarette and heated tobacco users in Japan, 2019: a cross-sectional analysis of the JASTIS Study. Tobacco Control. 2021; ():1.

Chicago/Turabian Style

Yan Kwan Lau; Sumiyo Okawa; Rafael Meza; Kota Katanoda; Takahiro Tabuchi. 2021. "Nicotine dependence of cigarette and heated tobacco users in Japan, 2019: a cross-sectional analysis of the JASTIS Study." Tobacco Control , no. : 1.

Preprint content
Published: 17 March 2021
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The aim of cross-sectional study was to investigate the association between pain and loneliness and increased social isolation during the COVID-19 pandemic. A total of 25,482 participants, aged 15–79 years, were assessed using an internet survey; the University of California, Los Angeles Loneliness Scale (Version 3), Short Form 3-item (UCLA-LS3-SF3) was used to assess loneliness, and a modified item of the UCLA-LS3-SF3 was used to measure the perception of increased social isolation during the pandemic. The outcome measures included the prevalence/incidence of pain (i.e., headache, neck or shoulder pain, upper limb pain, low back pain, and leg pain), pain intensity, and chronic pain history/prevalence. Pain intensity was measured by the pain/discomfort item of the 5-level version of the EuroQol 5 Dimension scale. Odds ratios of pain prevalence/incidence and chronic pain history/prevalence according to the UCLA-LS3-SF3 scoring groups (tertiles) and the frequency of the perceived increase in social isolation (categories 1–5) were calculated using multinomial logistic regression analysis. The mean pain intensity values among different loneliness and social isolation levels were tested using an analysis of covariance. Increased loneliness and the severity of the perceived social isolation were positively associated with pain prevalence/incidence, intensity, and the history/prevalence of chronic pain.

ACS Style

Keiko Yamada; Kenta Wakaizumi; Yasuhiko Kubota; Hiroshi Murayama; Takahiro Tabuchi. Loneliness, social isolation, and pain following the COVID-19 outbreak: data from a nationwide internet survey in Japan. 2021, 1 .

AMA Style

Keiko Yamada, Kenta Wakaizumi, Yasuhiko Kubota, Hiroshi Murayama, Takahiro Tabuchi. Loneliness, social isolation, and pain following the COVID-19 outbreak: data from a nationwide internet survey in Japan. . 2021; ():1.

Chicago/Turabian Style

Keiko Yamada; Kenta Wakaizumi; Yasuhiko Kubota; Hiroshi Murayama; Takahiro Tabuchi. 2021. "Loneliness, social isolation, and pain following the COVID-19 outbreak: data from a nationwide internet survey in Japan." , no. : 1.

Journal article
Published: 15 March 2021 in Journal of Affective Disorders
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Recent studies indicate an urgent need to take action against mental health issues during the COVID-19 pandemic. However, the association between larger-scale environmental factors such as living conditions and mental health problems during the pandemic is currently unknown. A nationwide, cross-sectional internet survey was conducted in Japan between August and September 2020 to examine the association between urbanization level and neighborhood deprivation as living conditions and COVID-19 case numbers by prefecture. Prevalence ratios (PRs) for severe psychological distress, suicidal ideation, and new-onset suicidal ideation during the pandemic were adjusted for potential confounders. Among 24,819 responses analyzed, the prevalence of mental health problems was 9.2% for severe psychological distress and 3.6% for new-onset suicidal ideation. PRs for severe psychological distress were significantly associated with higher urbanization level (highest PR = 1.30, 95% CI = 1.08-1.56). PRs for new-onset suicidal ideation were significantly associated with higher urbanization level (highest PR = 1.83, 95% CI = 1.37-2.45) and greater neighborhood deprivation (highest PR = 1.35, 95% CI = 1.06-1.72). Severe psychological distress and new-onset suicidal ideation were significantly more prevalent when there was higher urbanization plus lower neighborhood deprivation (PR = 1.34 [1.15-1.56], and 1.57 [1.22-2.03], respectively). These findings suggest that it is not the number of COVID-19 cases by residence area but higher urbanization level and greater neighborhood deprivation (lower neighborhood-level socioeconomic status) that are associated with severe psychological distress and new-onset suicidal ideation during the pandemic. These findings differ in part from evidence obtained before the pandemic.

ACS Style

Ryo Okubo; Takashi Yoshioka; Tomoki Nakaya; Tomoya Hanibuchi; Hiroki Okano; Satoru Ikezawa; Kanami Tsuno; Hiroshi Murayama; Takahiro Tabuchi. Urbanization level and neighborhood deprivation, not COVID-19 case numbers by residence area, are associated with severe psychological distress and new-onset suicidal ideation during the COVID-19 pandemic. Journal of Affective Disorders 2021, 287, 89 -95.

AMA Style

Ryo Okubo, Takashi Yoshioka, Tomoki Nakaya, Tomoya Hanibuchi, Hiroki Okano, Satoru Ikezawa, Kanami Tsuno, Hiroshi Murayama, Takahiro Tabuchi. Urbanization level and neighborhood deprivation, not COVID-19 case numbers by residence area, are associated with severe psychological distress and new-onset suicidal ideation during the COVID-19 pandemic. Journal of Affective Disorders. 2021; 287 ():89-95.

Chicago/Turabian Style

Ryo Okubo; Takashi Yoshioka; Tomoki Nakaya; Tomoya Hanibuchi; Hiroki Okano; Satoru Ikezawa; Kanami Tsuno; Hiroshi Murayama; Takahiro Tabuchi. 2021. "Urbanization level and neighborhood deprivation, not COVID-19 case numbers by residence area, are associated with severe psychological distress and new-onset suicidal ideation during the COVID-19 pandemic." Journal of Affective Disorders 287, no. : 89-95.

Original research
Published: 11 March 2021 in Tobacco Control
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Background Japan is the leading market for heated tobacco products (HTPs). We assessed the latest prevalence of HTP use including novel products (Ploom S, glo sens, and Pulze). Methods Data were obtained from an internet-based, self-reported survey conducted during February-March 2020 with individuals aged 15–74 years in Japan(n=9044). Prevalence of current (past 30-day) HTP use and cigarette smoking was computed. Poison regression analysis was conducted to examine predictors of HTP use among current cigarette smokers (n=1478). All analyses were weighted to account for selection bias in the internet survey using a nationally representative sample of Japanese population. Results In 2020, prevalence of current HTP use and cigarette smoking was 10.9% and 25.9% in Japan, respectively. The most commonly used HTP brand was IQOS (5.7%) followed by Ploom TECH/Ploom TECH+ (5.4%) and glo (2.6%). Use of Ploom S, glo sens and Pulze was 1.6%, 0.8% and 0.6%, respectively. Among current cigarette smokers, 34.9% of those who were interested in quitting smoking and 30.5% of those who were not interested in quitting reported concurrent use of HTP, respectively (difference not significant). Cigarette smokers who reported having multiple chronic conditions (aPR=2.31), alcohol consumption (aPR=2.07), and e-cigarette use (aPR=1.88) were more likely to use an HTP compared to those who did not report such characteristics. Conclusions HTP use remained prevalent in Japan. One in three current cigarette smokers used HTPs regardless of whether they were interested inquitting smoking. Continuedsurveillance is important to inform national and global tobaccocontrol strategies.

ACS Style

Satomi Odani; Takahiro Tabuchi. Prevalence of heated tobacco product use in Japan: the 2020 JASTIS study. Tobacco Control 2021, 1 .

AMA Style

Satomi Odani, Takahiro Tabuchi. Prevalence of heated tobacco product use in Japan: the 2020 JASTIS study. Tobacco Control. 2021; ():1.

Chicago/Turabian Style

Satomi Odani; Takahiro Tabuchi. 2021. "Prevalence of heated tobacco product use in Japan: the 2020 JASTIS study." Tobacco Control , no. : 1.

Journal article
Published: 05 March 2021 in Journal of Epidemiology
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Background: The trend of the diffusion of heated tobacco products (HTPs) is a great concern because HTPs have become available worldwide. This study examined the sociodemographic characteristics of HTPs users in Japan, which were first launched. Methods: This cross-sectional study used data from an online survey conducted in 2017. A total of 4,926 participants, aged 20–69 years, were included. The dependent variable was the type of tobacco products used. The independent variables were age and equivalent income. Two analyses estimated the odds ratios (ORs) for 1) being smokers compared to “non-smokers”, and 2) being “HTP smokers” compared to “only combustible cigarette smokers.” Analyses were stratified by sex. Educational attainment and occupation were also used in the sensitivity analyses. Results: The percentages of “non-smokers,” “only combustible cigarette smokers,” and “HTP smokers” were 82.8%, 14.2%, and 3.0%, respectively. When compared to the oldest participants (aged 60–69), the youngest participants (aged 20–29) tended to be “HTP smokers” (OR=7.90 (95% CI=3.09–20.22) for men and 9.28 (2.14–40.28) for women). Compared to participants with the lowest incomes (<2 million), those with the highest incomes (≥4 million) tended to use HTPs (OR=2.93 (95% CI=1.56–5.49) in men and 1.82 (0.73–4.54) in women). These trends were consistent when analyses included only smokers. There were consistent results in other SES measurements; educational attainment and occupation. Conclusions: Younger or more affluent people tended to use HTPs, although smoking rates among these populations were generally lower. New tobacco control efforts are required.

ACS Style

Ayaka Igarashi; Jun Aida; Taro Kusama; Takahiro Tabuchi; Toru Tsuboya; Kemmyo Sugiyama; Takafumi Yamamoto; Ken Osaka. Heated Tobacco Products Have Reached Younger or More Affluent People in Japan. Journal of Epidemiology 2021, 31, 187 -193.

AMA Style

Ayaka Igarashi, Jun Aida, Taro Kusama, Takahiro Tabuchi, Toru Tsuboya, Kemmyo Sugiyama, Takafumi Yamamoto, Ken Osaka. Heated Tobacco Products Have Reached Younger or More Affluent People in Japan. Journal of Epidemiology. 2021; 31 (3):187-193.

Chicago/Turabian Style

Ayaka Igarashi; Jun Aida; Taro Kusama; Takahiro Tabuchi; Toru Tsuboya; Kemmyo Sugiyama; Takafumi Yamamoto; Ken Osaka. 2021. "Heated Tobacco Products Have Reached Younger or More Affluent People in Japan." Journal of Epidemiology 31, no. 3: 187-193.

Preprint content
Published: 21 February 2021
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BACKGROUND The use of telemedicine outpatient visits has increased dramatically during the COVID-19 pandemic in many countries. Although disparities in access to telemedicine by age and socioeconomic status (SES) have been well-documented, evidence is limited as to how these disparities changed during the COVID-19 pandemic. Moreover, the equity of patient access to telemedicine has been scarcely reported in Japan, despite the huge potential for telemedicine expansion. OBJECTIVE We aimed to investigate changes due to age and SES disparities in telemedicine use during the COVID-19 pandemic in Japan. METHODS Using data from a large internet survey conducted between August 25 and September 30, 2020, in Japan, we examined the associations of participant age and SES (educational attainment, urbanicity of residence, and income level) with their telemedicine use in the following two time periods during the pandemic: April 2020 and August-September 2020. RESULTS Of the 24,526 participants aged 18 to 79 years (50.8% [n=12,446] women), the proportion of individuals who reported using telemedicine increased from 2.0% (n=497) in April 2020 to 4.7% (n=1159) in August-September 2020. After adjusting for potential confounders, younger individuals were more likely to use telemedicine than older individuals in April 2020. Although this pattern persisted in August-September 2020, we also observed a substantial increase in telemedicine use among individuals aged 70 to 79 years (adjusted rates, 0.2% in April 2020 vs 3.8% in August-September 2020; P<.001 after multiple comparisons). We found disparities in telemedicine use by SES in August-September 2020 that did not exist in April 2020. In August-September 2020, individuals with a university degree were more likely to use telemedicine than those with a high school diploma or less (adjusted rates, 6.6% vs 3.5%; P<.001). Individuals living in urban areas exhibited higher rates of telemedicine use than those living in rural areas only in August-September 2020 (adjusted rates, 5.2% vs 3.8%; P<.001). Disparities in telemedicine use by income level were not observed in either time period. CONCLUSIONS In general, younger individuals increased their use of telemedicine compared to older individuals during the pandemic, although individuals in their 70s also increased their use of telemedicine. Disparities in telemedicine use by educational attainment and urbanicity of residence widened during the COVID-19 pandemic.

ACS Style

Atsushi Miyawaki; Takahiro Tabuchi; Michael K Ong; Yusuke Tsugawa. Age and Social Disparities in the Use of Telemedicine During the COVID-19 Pandemic in Japan: Cross-sectional Study (Preprint). 2021, 1 .

AMA Style

Atsushi Miyawaki, Takahiro Tabuchi, Michael K Ong, Yusuke Tsugawa. Age and Social Disparities in the Use of Telemedicine During the COVID-19 Pandemic in Japan: Cross-sectional Study (Preprint). . 2021; ():1.

Chicago/Turabian Style

Atsushi Miyawaki; Takahiro Tabuchi; Michael K Ong; Yusuke Tsugawa. 2021. "Age and Social Disparities in the Use of Telemedicine During the COVID-19 Pandemic in Japan: Cross-sectional Study (Preprint)." , no. : 1.

Journal article
Published: 11 February 2021 in International Journal of Environmental Research and Public Health
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Although secondhand cigarette smoke is known to cause various health consequences, even the short-term effects of exposure to secondhand heated-tobacco-product (HTP) aerosol are unknown. The purpose of this study was to examine short-term symptoms related to secondhand HTP aerosol exposure. An internet-based self-reported questionnaire survey was conducted in 2019 as a part of the Japan Society and New Tobacco Internet Survey (JASTIS) study. In total, 8784 eligible respondents aged 15–73 years were analyzed. We examined the frequency (%) of secondhand combustible cigarette smoke and HTP aerosol exposure, and the exposure-related subjective symptoms (sore throat, cough, asthma attack, chest pain, eye pain, nausea, headache, and other symptoms). Overall, 56.8% of those exposed to secondhand cigarette smoke had any subjective symptoms, compared to 39.5% of those exposed to HTP aerosol. Asthma attack and chest pain were reported more frequently when associated with secondhand HTP exposure (10.9 and 11.8%, respectively) than with secondhand cigarette smoke exposure (8.4 and 9.9%, respectively). Sore throat, cough, eye pain, nausea, and headache were also more frequently reported when associated with secondhand cigarette smoke than with secondhand HTP exposure. This is the first study to examine severe subjective symptoms such as asthma attacks and chest pains, and to suggest that respiratory and cardiovascular abnormalities could be related to secondhand heated-tobacco-product aerosol exposure. Further careful investigations are necessary.

ACS Style

Yuki Imura; Takahiro Tabuchi. Exposure to Secondhand Heated-Tobacco-Product Aerosol May Cause Similar Incidence of Asthma Attack and Chest Pain to Secondhand Cigarette Exposure: The JASTIS 2019 Study. International Journal of Environmental Research and Public Health 2021, 18, 1766 .

AMA Style

Yuki Imura, Takahiro Tabuchi. Exposure to Secondhand Heated-Tobacco-Product Aerosol May Cause Similar Incidence of Asthma Attack and Chest Pain to Secondhand Cigarette Exposure: The JASTIS 2019 Study. International Journal of Environmental Research and Public Health. 2021; 18 (4):1766.

Chicago/Turabian Style

Yuki Imura; Takahiro Tabuchi. 2021. "Exposure to Secondhand Heated-Tobacco-Product Aerosol May Cause Similar Incidence of Asthma Attack and Chest Pain to Secondhand Cigarette Exposure: The JASTIS 2019 Study." International Journal of Environmental Research and Public Health 18, no. 4: 1766.