Whiejong Han

Dr. Whiejong Han

orcid

Research Focus & Metrics

Academic Career Length

5Years (2022-Present)

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

Representative Publications

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Verified
Journal Article
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VRVasuki Rajaguru
Vasuki Rajaguru
WHWhiejong Han
Whiejong Han
Tae Hyun KimTae Hyun Kim
Tae Hyun Kim
JSJaeyong Shin
Jaeyong Shin
SLSang Gyu Lee
Sang Gyu Lee
The LACE index accounts for: Length of stay (L), Acuity of admission (A), Comorbidities (C), and recent Emergency department use (E). This study aimed to explore the LACE index to predict the high risk of 30-day readmission in patients with diverse disease conditions by an updated systematic review. A systematic review carried out by electronic databases from 2011–2021. The studies included a LACE index score for 30-day of readmission and patients with all types of diseases and were published in the English language. The meta-analysis was performed by using a random-effects model with a 95% confidence interval. Of 3300 records, a total of 16 studies met the inclusion criteria. The country of publication was primarily the USA (n = 7) and study designs were retrospective and perspective cohorts. The average mean age was 64 years. The C-statistics was 0.55 to 0.81. The pooled random effects of relative risk readmission were overall (RR, 0.20; 95% CI, 0.12–0.34) and it was favorable. The subgroup analysis of the opted disease-based relative risk of readmissions of all causes, cardiovascular and pulmonary diseases, and neurological diseases were consistent and statistically significant at p < 0.001 level. Current evidence of this review suggested that incorporating a high-risk LACE index showed favorable to risk prediction and could be applied to predict 30-day readmission with chronic conditions. Future study would be planned to predict the high risk of 30-day readmission in acute clinical care for utility, and applicability of promising LACE index in South Korean hospitals.

6 February 2023 in Healthcare
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Journal Article
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HDHo Minh Duy
Ho Minh Duy
JLJakyoung Lee
Jakyoung Lee
WHWhiejong Han
Whiejong Han
VRVasuki Rajaguru
Vasuki Rajaguru
SJSuk-Yong Jang
Suk-Yong Jang
This study aimed to analyze the utilization of health care facilities and the health-seeking behavior of elderly people with non-communicable diseases and find the factors that affect them. A cross-sectional study was conducted in seven coastal areas of the Thua Thien Hue province, Vietnam, using a sample of 370 elderly people aged over 60 years. Chi-square and multiple logistic regression analyses were used to examine the factors associated with the utilization of health care services. The participants’ average age was 69.70 (SD), and 18% of them reported having ≥ two non-communicable diseases (NCDs). The results of the study showed that 69.8% of the total participants exhibited health-seeking behaviors. The findings also revealed that elderly people living alone, and those with an average or above-average income, had higher utilization of health care services. Participants with multiple NCDs exhibited more health-seeking behaviors than those with only one (OR: 9.24, 95% CI: 2.66–32.15, p = <0.001). The presence of health insurance and the need for health care counseling were also relevant ([OR: 4.16, 95% CI: 1.30–13.31, p = 0.016], [OR: 3.91, 95% CI: 2.04–7.49, p < 0.001], respectively). Health-seeking behavior is one of the most important positive implications for the aged population, as it encompasses one’s physical, mental, and psychological wellbeing. Future studies can aim at gaining an in-depth understanding of the same results, helping improve the health-seeking behavior of elderly people, and enhancing their quality of life.

20 January 2025 in Annals of Global Health
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Journal Article
Open access
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DPDanik Iga Prasiska
Danik Iga Prasiska
KOKennedy Mensah Osei
Kennedy Mensah Osei
Durga Datta ChapagainDurga Datta Chapagain
Durga Datta Chapagain
VRVasuki Rajaguru
Vasuki Rajaguru
Tae Hyun KimTae Hyun Kim
Tae Hyun Kim
WHWhiejong Han
Whiejong Han
Introduction: Following the introduction of the Global Health Security Index (GHSI), the coronavirus disease 2019 (COVID‑19) pandemic emerged as an unprecedented global health crisis, underscoring the need for robust health security frameworks and preparedness measures. This study conducts a scoping review to analyze the existing literature on the GHSI and assess national COVID‑19 responses across different countries. Method: A comprehensive search of electronic databases (EBSCO, EMBASE, PubMed, Scopus, and Web of Science) was conducted for articles published from 2020 to 2024. Search terms included “Global Health Security Index” and terms related to COVID‑19. The study followed the Preferred Reporting Items for Systematic Reviews and Meta‑analyses for Scoping Reviews (PRISMA‑ScR) guidelines. The Newcastle–Ottawa Scale (NOS), adjusted for cross‑sectional studies, was used for quality assessment. Results: A total of 3,243 studies were identified, of which 20 were finalized for data synthesis. Specific COVID‑19 parameters were analyzed to provide a comprehensive overview of each country’s pandemic response capacity. Among the selected studies, 17 (85%) had a low risk of bias, while 3 (15%) had a medium risk. Countries’ response capacities were categorized into five key parameters: detection, mortality, transmission, fatality, and recovery. Findings revealed significant discrepancies between GHSI scores and actual national responses, with some high‑scoring countries struggling to control the pandemic. This raises concerns about the GHSI’s predictive reliability. Conclusion: The study highlights that the GHSI does not fully capture a country’s capacity to respond effectively to COVID‑19. However, it remains a valuable tool for identifying gaps in pandemic preparedness. To enhance its relevance, the index should integrate a wider range of factors, including political leadership, governance, public health infrastructure, and socio‑cultural elements, which are crucial in managing public health emergencies.

19 August 2024 in Archives of Public Health
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Journal Article
Open access
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DPDanik Iga Prasiska
Danik Iga Prasiska
Durga Datta ChapagainDurga Datta Chapagain
Durga Datta Chapagain
KOKennedy Mensah Osei
Kennedy Mensah Osei
VRVasuki Rajaguru
Vasuki Rajaguru
SKSunjoo Kang
Sunjoo Kang
WHWhiejong Han
Whiejong Han
Background: Limited research exists on the comorbidity of pulmonary tuberculosis with non-communicable diseases (NCDs) and its implications for healthcare utilization in Indonesia. The lack of investigation into NCD comorbidity among pulmonary tuberculosis patients could adversely affect both the healthcare system and the national health insurance scheme. Understanding the NCD comorbidity among pulmonary tuberculosis patients, associated factors, and healthcare utilization is crucial for ensuring the effective and efficient delivery of health services. Method: This study utilized an observational cross-sectional design based on anonymized sample data from tuberculosis cases covered by Indonesia's National Health Insurance in 2021. Chi-square tests were employed to analyze dependent and independent variables, while unadjusted and adjusted logistic regressions were used to explore further associations. Results: The prevalence of NCD comorbidity in tuberculosis patients was 11.81%. Aged over 60 (aOR 5.16; [CI] 4.23—6.3), married (aOR 1.19; [CI] 1.05—1.34), and unemployed (aOR 1.27; [CI] 1.08—1.49) were associated with the NCD comorbidity in pulmonary tuberculosis patients. Factors associated with increased inpatient service utilization among pulmonary tuberculosis patients included aged over 60 (aOR 5.69; [CI] 4.81—6.74), male (aOR 1.32; [CI] 1.23—1.40), self-employment (aOR 1.42; [CI] 1.29—1.56), having insurance subsidized by central government (aOR 1.89; [CI] 1.73—2.08) or local government funds (aOR 1.75; [CI] 1.58—1.93), and having comorbidity non-communicable diseases (aOR 1.80; [CI] 1.66—1.96). Conclusion: Pulmonary tuberculosis patients exhibit a significant prevalence of NCD comorbidity, which substantially impacts healthcare utilization. Early detection and management of these conditions are critical to mitigate burdens on both the healthcare system and the financial sustainability of the national health insurance scheme. Integrating health services for tuberculosis and NCDs through bidirectional screening is essential for comprehensive patient care.

19 February 2026 in Tropical Medicine and Health
Verified
Journal Article
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KOKennedy Mensah Osei
Kennedy Mensah Osei
AAAbraham Awonboro Adiak
Abraham Awonboro Adiak
WHWhiejong Han
Whiejong Han
Malaria remains a leading cause of morbidity among children under five in Ghana despite widespread deployment of insecticide-treated nets (ITNs). Understan

26 June 2025 in PLOS ONE
Verified
Journal Article
Open access
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KOKennedy Mensah Osei
Kennedy Mensah Osei
DPDanik Iga Prasiska
Danik Iga Prasiska
Durga Datta ChapagainDurga Datta Chapagain
Durga Datta Chapagain
VRVasuki Rajaguru
Vasuki Rajaguru
SKSunjoo Kang
Sunjoo Kang
WHWhiejong Han
Whiejong Han
Background: Maternal health services utilization is essential in the reduction of maternal mortality. Despite the implementation of a national health insurance scheme in 2003, Ghana still reports universal health coverage service index below the global average. This study investigates the association between health insurance coverage and maternal health service utilization. Methods: This study utilized data from the Ghana Demographic and Health Survey (GDHS) conducted in 2022. The independent variable of the study was health insurance coverage, and the outcome variable was maternal health service utilization by assessing indicators including the timing of the first ANC visit, completing the recommended number of ANC visits, skilled birth attendance, facility-based delivery, and post-natal care. The data was analyzed for both descriptive statistics and logistic regression. Results: The study sample consisted of 4303 women of reproductive age who had live births within the past 5 years of the survey. Health insurance coverage is associated with the likely odds of post-natal care (aOR 1.56; 1.15–2.12). Counterintuitively, women who were insured were less likely to give birth in a health facility (aOR 0.59; 0.45–0.78) in the presence of a skilled birth attendant (aOR 0.70; 0.57–0.86). Conclusion: This study shows that while health insurance coverage can boost maternal health service utilization, the implementation mechanisms of these policies play a more critical role. Addressing challenges like out-of-pocket payments for insured individuals is essential to enhance service utilization under the policy.