Thapakorn Ruanjai

Dr. Thapakorn Ruanjai


Research Focus & Metrics

Academic Career Length

9Years (2018-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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31 December 2018 in The Journal of Infection in Developing Countries
Verified
Journal Article
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PCPalita Charoensook
Palita Charoensook
PUPanupong Upala
Panupong Upala
AAAmornrat Anuwatnonthakate
Amornrat Anuwatnonthakate
TRThapakorn Ruanjai
Thapakorn Ruanjai
TATawatchai Apidechkul
Tawatchai Apidechkul
Introduction: The study aimed to estimate the prevalence of tuberculosis (TB) and to assess the quality of life and depression among the migrant workers in northern Thailand. Methodology: A cross-sectional study was conducted to elicit information among migrant workers in Chiang Rai and Pha Yao provinces, northern Thailand. Several standard forms including GeneXpert were used for data collection. A simple random sampling was used to select the companies and the study sample. Interview was conducted in a confidential room. Chi-square was used to detect the association between variables at the significant level α = 0.05. Results: Totally 467 migrant workers were recruited into the study, 97.9% were Myanmar national, 55.7% were males, and 51.4% were aged > 32 years. Only 2.1% were living in Thailand illegally, 23.8% had no health insurance, and 92.1% had monthly income at < 20,000 baht. Eight cases (1.71%) were at risk of TB disease from the screening, only one case was positive for TB disease from GeneXpert, and no multi-drug resistant detected. 47.5% had a low level of knowledge and 28.7% had a negative attitude on TB prevention and care. 10.7% were in a moderate to severe stage of depression. Six variables were found the significant associated with quality of life; ethnicity, sex, marital status, income, length of working in Thailand, and insurance. Conclusions: Besides active TB surveillance system, inter-country public health policy should be developed to cope with depression problem and improve quality of life among the migrant in Thailand

13 February 2026 in Research Medical Journal
Verified
Journal Article
Open access
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TKTuksin Kaojaree
Tuksin Kaojaree
BSBurapa Saenta
Burapa Saenta
NJNatthaphat Jomin
Natthaphat Jomin
SBSakulying Bunnag
Sakulying Bunnag
TCThanawadee Chantian
Thanawadee Chantian
TRThapakorn Ruanjai
Thapakorn Ruanjai
Background: Fine particulate matter with a diameter of 2.5 µm or less (PM2.5) dust has emerged as a major air pollution concern in Thailand. Objective: To investigate the factors influencing self-protective behaviors from exposure to PM2.5 or less among people in community-dwelling in Chiang Rai province. Methods: A community-based cross-sectional study was conducted to collect data from 216 participants in the Rong Chang subdistrict, Pa Dad district, Chiang Rai province, Thailand. Validated questionnaires were administered to gather information from March and April 2025. Data were analyzed using descriptive statistics, Pearson product-moment and Spearman rank correlation coefficients, and multiple linear regression. Results: The results revealed that 63.40% of the participants were female, with a mean (SD) age of 54.63 (15.27) years. Additionally, 56.00% had completed primary education, and 60.10% worked as farmers. More than half of the participants (56.40%) exhibited a high level of protective behavior. Multiple linear regression analysis revealed that access to air quality and health information about PM2.5 (B = 1.092, β = 0.590), attitude toward PM2.5 (B = 0.272, β = 0.146), and age (B = 0.048, β = 0.110) significantly influenced self-protective behavior (adjusted R² = 0.468). Conclusions: The findings highlight that the relevant organization should promote public health interventions focusing on the attitude regarding PM2.5 and access to air quality and health information about PM2.5 among the dwelling community. Furthermore, tailored interventions specifically targeting at age-specific populations are recommended.

BSBoonsita Suwannakul
Boonsita Suwannakul
ASArunrat Srithawong
Arunrat Srithawong
CKChonticha Kaewjoho
Chonticha Kaewjoho
TRThapakorn Ruanjai
Thapakorn Ruanjai
CSChatchada Sutalangka
Chatchada Sutalangka
WCWilawan Fah Luang Chaiut
Wilawan Fah Luang Chaiut
Inadequate health literacy (HL) is a critical factor contributing to fall risk among older adults. However, evidence on how HL relates to home environment and fall prevention behaviors in Asian community settings remains limited. This study aimed to assess HL levels and examine their associations with sociodemographic characteristics, home environment, and fall prevention behaviors. A community-based cross-sectional study was conducted among 177 community-dwelling older adults aged 60 to 79 years. Data were collected through structured questionnaires assessing sociodemographic characteristics, home environment, fall prevention behaviors, and HL using the European Health Literacy Survey Questionnaire (HLS-EU-Q47), which cover three subdomains: healthcare, disease prevention, and health promotion. Multiple linear regression analysis was performed to examine the associations between sociodemographic factors, home environment, fall prevention behaviors, and HL. The HL score among older adults was 34.50 ± 7.50 (54.2% limited HL). A total HL score was positively associated with regular exercise (β = 2.73, 95% CI: 0.71, 4.74) and a sitting toilet (β = 6.38; 95% CI: 3.83, 8.92) and marginally associated with wearing properly fitting shoes (β = 2.54; 95% CI: 0.22, 4.86). Therefore, the health promotion aimed at improving HL in this population may benefit from concurrently promoting regular exercise, home safety modifications, and safe footwear practices.

25 February 2026 in BMC Public Health
Verified
Journal Article
Open access
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SKSiwarak Kitchanapaibul
Siwarak Kitchanapaibul
CSChomnard Singhan
Chomnard Singhan
TRThapakorn Ruanjai
Thapakorn Ruanjai
Background: The double burden of malnutrition (undernutrition and overnutrition) remains a major public health concern among preschool-aged ethnic minority children in northern Thailand. Cultural and geographic contexts shape caregiving and dietary behaviors while limiting access to health and nutritional services. Objective: This study examined the relationship between the double burden of malnutrition and its associated behavioral and socioenvironmental factors among preschool-aged ethnic minority children. Methods: A community-based cross-sectional study was conducted among 260 children aged 2–5 years in Chiang Rai Province, northern Thailand. Data on sociodemographic, caregiving, and dietary characteristics were obtained from parents or caregivers using structured questionnaires, and the nutritional status of the children was assessed via WHO-standardized anthropometric measurements. Multivariate logistic regression was used to identify factors associated with stunting, wasting, and overweight/obesity. Results: The findings revealed a high prevalence of the double burden of malnutrition, including stunting (22.3%), wasting (20.8%), and overweight/obesity (11.9%). Stunting was associated with frequent consumption of staple starchy foods (OR 9.03; 95% CI 1.18–69.05). Wasting was associated with meals prepared by nonparental caregivers (OR 2.51; 95% CI 1.12–5.64). Overweight/obesity was related to mothers being the primary income earners (OR 3.14; 95% CI 1.23–8.04) and having low vegetable intake (OR 2.35; 95% CI 1.07–5.20). Conclusion: The coexistence of undernutrition and overnutrition among ethnic minority preschoolers is driven by both behavioral and socioenvironmental determinants. Targeted interventions that enhance caregiver nutrition literacy, promote healthy feeding behaviors, and integrate qualified nutrition professionals into community-based childcare systems are crucial for addressing these nutritional disparities.

16 June 2026 in Research Medical Journal
Verified
Journal Article
Open access
TATheint Nandar Aung
Theint Nandar Aung
TRThapakorn Ruanjai
Thapakorn Ruanjai
TATawatchai Apidechkul
Tawatchai Apidechkul
PWPilasinee Wongnuch
Pilasinee Wongnuch
NANatnaree Aimyong
Natnaree Aimyong
Background: Psychological resilience plays an important role in enabling individuals to adapt to and recover from adverse conditions. However, comprehensive evidence regarding psychological resilience remains limited, especially among vulnerable populations such as Myanmar migrant workers, who face language barriers and limited access to health services. Objectives: To examine the psychological resilience level and its associated factors among Myanmar migrant workers in Chiang Rai, Thailand. Methods: A cross-sectional study was conducted between July and September 2025 among 405 Myanmar migrant workers in Chiang Rai, Thailand. A purposive sampling strategy with a 3-stage procedure was used. Data were collected using a 4-part questionnaire assessing personal information, the Perceived Stress Scale, the Multidimensional Scale of Perceived Social Support, and the 10-item Connor-Davidson Resilience Scale. Data were analyzed using descriptive statistics, simple linear regression, and multiple linear regression. Results: A total of 405 Myanmar migrant workers participated in the study, with a mean (SD) age of 32.0 (10.2) years, and 51.1% were female. Overall, 44.9% of the participants exhibited low psychological resilience. Multiple linear regression analysis using the stepwise selection method identified 4 factors that remained statistically significant. The final model explained 23.4% of the variance in psychological resilience (R² = 0.241, adjusted R² = 0.234). Notably, individuals with basic/fluent Thai speaking skills had higher psychological resilience scores than those without Thai speaking skills (B = 3.095; 95% CI, 1.420-4.771; P < .001). Similarly, participants who reported drinking had higher resilience scores than nondrinkers (B = 3.379; 95% CI, 1.260-5.498; P = .002). Conversely, higher perceived stress scores were associated with lower psychological resilience scores (B = -0.558; 95% CI, -0.721 to -0.395; P < .001), whereas higher social support from significant others was associated with higher psychological resilience scores (B = 2.951; 95% CI, 1.837-4.065; P < .001). Conclusions: Psychological resilience among Myanmar migrant workers remains suboptimal. To address the specific associations identified, targeted interventions should prioritize community-based Thai speaking language programs to reduce communication barriers and improve access to care. Additionally, institutional strategies must incorporate structured stress management and reinforce informal support networks from significant others, while promoting healthy, alcohol-free coping mechanisms.