1.Development and validation of the sarcopenia composite index: A comprehensive approach for assessing sarcopenia in the ageing population.
Hsiu-Wen KUO ; Chih-Dao CHEN ; Amy Ming-Fang YEN ; Chenyi CHEN ; Yang-Teng FAN
Annals of the Academy of Medicine, Singapore 2025;54(2):101-112
INTRODUCTION:
The diagnosis of sarcopenia relies on key indicators such as handgrip strength, walking speed and muscle mass. Developing a composite index that integrates these measures could enhance clinical evaluation in older adults. This study aimed to standardise and combine these metrics to establish a z score for the sarcopenia composite index (ZoSCI) tailored for the ageing population. Additionally, we explore the risk factors associated with ZoSCI to provide insights into early prevention and intervention strategies.
METHOD:
This retrospective study analysed data between January 2017 and December 2021 from an elderly health programme in Taiwan, applying the Asian Working Group for Sarcopenia criteria to assess sarcopenia. ZoSCI was developed by standardising handgrip strength, walking speed and muscle mass into z scores and integrating them into a composite index. Receiver operating characteristic (ROC) curve analysis was used to determine optimal cut-off values, and multiple regression analysis identified factors influencing ZoSCI.
RESULTS:
Among the 5047 participants, the prevalence of sarcopenia was 3.7%, lower than the reported global prevalence of 3.9-15.4%. ROC curve analysis established optimal cut-off points for distinguishing sarcopenia in ZoSCI: -1.85 (sensitivity 0.91, specificity 0.88) for males and -1.97 (sensitivity 0.93, specificity 0.88) for females. Factors associated with lower ZoSCI included advanced age, lower education levels, reduced exercise frequency, lower body mass index and creatinine levels.
CONCLUSION
This study introduces ZoSCI, a new compo-site quantitative indicator for identifying sarcopenia in older adults. The findings highlight specific risk factors that can inform early intervention. Future studies should validate ZoSCI globally, with international collaborations to ensure broader applicability.
Humans
;
Sarcopenia/physiopathology*
;
Male
;
Aged
;
Female
;
Retrospective Studies
;
Hand Strength
;
Taiwan/epidemiology*
;
ROC Curve
;
Aged, 80 and over
;
Risk Factors
;
Walking Speed
;
Geriatric Assessment/methods*
;
Prevalence
;
Muscle, Skeletal
;
Middle Aged
2.The increased risk of exposure to fine particulate matter for depression incidence is mediated by elevated TNF-R1: the Healthy Aging Longitudinal Study.
Ta-Yuan CHANG ; Ting-Yu ZHUANG ; Yun-Chieh YANG ; Chih-Cheng HSU ; Wan-Ju CHENG
Environmental Health and Preventive Medicine 2025;30():49-49
BACKGROUND:
Depression among older adults is an important public health issue, and air and noise pollution have been found to contribute to exacerbation of depressive symptoms. This study examined the association of exposure to air and noise pollutants with clinically-newly-diagnosed depressive disorder. The mediating role of individual pro-inflammatory markers was explored.
METHODS:
We linked National Health Insurance claim data with 2998 healthy community-dwellers aged 55 and above who participated in the Healthy Aging Longitudinal Study between 2009 and 2013. Newly diagnosed depressive disorder was identified using diagnostic codes from the medical claim data. Pollutants were estimated using nationwide land use regression, including PM2.5 and PM10, carbon monoxide, ozone, nitrogen dioxide, sulfur dioxide, and road traffic noise. Cox proportional hazard models were employed to examine the association between pollutants and newly developed depressive disorders. The mediating effect of serum pro-inflammatory biomarkers on the relationship was examined.
RESULTS:
Among the 2998 participants, 209 had newly diagnosed depressive disorders. In adjusted Cox proportional hazard models, one interquartile range increase in PM2.5 (8.53 µg/m3) was associated with a 17.5% increased hazard of developing depressive disorders. Other air pollutants and road traffic noise were not linearly associated with depressive disorder incidence. Levels of serum tumor necrosis factor receptor 1 mediated the relationship between PM2.5 and survival time to newly onset depressive disorder.
CONCLUSION
PM2.5 is related to an increased risk of newly developed depressive disorder among middle-aged and older adults, and the association is partially mediated by the pro-inflammatory marker TNF-R1.
Humans
;
Particulate Matter/analysis*
;
Male
;
Female
;
Middle Aged
;
Longitudinal Studies
;
Aged
;
Incidence
;
Air Pollutants/analysis*
;
Environmental Exposure/adverse effects*
;
Taiwan/epidemiology*
;
Receptors, Tumor Necrosis Factor, Type I/blood*
;
Proportional Hazards Models
;
Biomarkers/blood*
;
Depression/epidemiology*
;
Aged, 80 and over
;
Depressive Disorder/chemically induced*
;
Risk Factors
;
Air Pollution/adverse effects*
3.A population-based study on meteorological conditions in association with motor vehicle collisions among people with type 2 diabetes.
Chung-Yi LI ; Ya-Hui CHANG ; Hon-Ping MA ; Ping-Ling CHEN ; Chang-Ta CHIU ; I-Lin HSU
Environmental Health and Preventive Medicine 2025;30():91-91
BACKGROUND:
Prior studies have shown that drivers with type 2 diabetes are more likely to be involved in motor vehicle collisions (MVCs) compared to the general population. Certain meteorological factors have been increasingly recognized as contributors to MVC risk. This study aims to examine the association of MVCs with temperature, rainfall, wind speed, and sunshine duration among drivers with type 2 diabetes.
METHODS:
Using Taiwan's National Health Insurance data (2019-2021), we identified individuals diagnosed with type 2 diabetes and linked their records to the Police-Reported Traffic Accident Registry to obtain daily MVC counts. Meteorological data were sourced from the Central Weather Administration. Associations between daily weather conditions and MVCs were assessed using a Distributed Lag Non-Linear Model.
RESULTS:
Over the 1,096-day study period, 170,468 MVC events involving drivers with type 2 diabetes were recorded. A U-shaped association was observed between same-day temperature and MVC rates. Compared with the reference temperature of 17.5 °C, both lower temperatures (≤15 °C; rate ratio [RR] = 1.014-1.053) and higher temperatures (≥30 °C; RR = 1.062) were associated with increased MVC risk. Rainfall showed an inverse relationship with MVCs. Compared with 70 mm of rainfall, the lowest MVC rate occurred at 129 mm (RR = 0.873), while the highest was on rain-free days (0 mm; RR = 1.068). Stronger effects were observed when lag periods up to 14 days were considered. Wind speed and sunshine duration were not significantly associated with MVC risk.
CONCLUSIONS
These findings suggest that drivers with type 2 diabetes should exercise greater caution on days with extreme temperatures or in days with lesser rainfall, as these conditions may elevate MVC risk.
Humans
;
Diabetes Mellitus, Type 2/epidemiology*
;
Taiwan/epidemiology*
;
Accidents, Traffic/statistics & numerical data*
;
Male
;
Middle Aged
;
Female
;
Weather
;
Aged
;
Adult
;
Temperature
;
Risk Factors
4.Associations of hyperglycemic emergency and severe hypoglycemia incidences with seasonality and ambient temperature among pregnant women with diabetes: a nested case-control study in Taiwan.
Wen-Hsuan HOU ; Jia-Ling WU ; Chin-Li LU ; Lilis SULISTYORINI ; Muhammad Atoillah ISFANDIARI ; Chang-Ta CHIU ; Chung-Yi LI
Environmental Health and Preventive Medicine 2022;27(0):11-11
BACKGROUND:
Associations of acute glycemic complications with season and ambient temperature have been reported in general population with diabetes. However, little is known about the risks of acute glycemic complications in relation to season and ambient temperature in pregnant women, who are likely to be even more vulnerable. This work aimed to investigate the associations of season and ambient temperature with pregnancies complicated with hyperglycemia emergency or severe hypoglycemia.
METHODS:
Two separate case-control studies were nested within 150,153 pregnancies by women with type 1, type 2, or gestational diabetes between 2009 and 2014 in Taiwan. Hyperglycemia emergency (mainly diabetic ketoacidosis and hyperosmolar hyperglycemic state) and severe hypoglycemia occurred in 77 and 153 diabetic pregnancies (cases), respectively. Ten control pregnancies were randomly selected for each case by matching each case pregnancy on type of diabetes (i.e., T1DM, T2DM, or GDM), maternal age on the date of acute glycemic complication occurrence (i.e., index date), and "length of gestation at risk" (i.e., period between conception and index date). Meteorological parameters were retrieved from 542 meteorological monitoring stations across Taiwan during 2008-2014. Conditional logistic regression analysis with generalized estimation equation was separately performed to estimate the covariate adjusted odds ratios (ORs) of each of the two acute glycemic complications in association with season and ambient temperature within 30 days prior to the index date.
RESULTS:
Compared to summer, winter season was associated with a significantly elevated risk of severe hypoglycemia with an OR of 1.74 (95% confidence interval (CI) 1.08-2.79). The OR of hyperglycemic emergency was also elevated in winter season at OR of 1.88, but the significance is only marginal (95% CI 0.97-3.64, p = 0.0598). Subgroup analyses further noted that such seasonal variation was also observed in pregnancies with pre-pregnancy type 1 diabetes and gestational diabetes. On the other hand, ambient temperature was not significantly associated with the two acute glycemic complications.
CONCLUSIONS
A moderately but significantly elevated risk of severe hypoglycemia was found in pregnant women with diabetes during winter season, and such increased risk was more evident in pregnancies with T1DM.
Case-Control Studies
;
Diabetes Mellitus, Type 1/complications*
;
Female
;
Humans
;
Hypoglycemia/etiology*
;
Incidence
;
Pregnancy
;
Pregnant Women
;
Taiwan/epidemiology*
;
Temperature
6.Reducing the consumption of personal protective equipment by setting up a multifunctional sampling station in the emergency department to screen for COVID-19 infection in Taiwan.
Po-Ting LIN ; Ting-Yuan NI ; Tren-Yi CHEN ; Chih-Pei SU ; Hsiao-Fen SUN ; Mu-Kuan CHEN ; Chu-Chung CHOU ; Po-Yu WANG ; Yan-Ren LIN
Environmental Health and Preventive Medicine 2020;25(1):34-34
In Taiwan, high-risk patients have been identified and tested for preventing community spread of COVID-19. Most sample collection was performed in emergency departments (EDs). Traditional sample collection requires substantial personal protective equipment (PPE), healthcare professionals, sanitation workers, and isolation space. To solve this problem, we established a multifunctional sample collection station (MSCS) for COVID-19 testing in front of our ED. The station is composed of a thick and clear acrylic board (2 cm), which completely separates the patient and medical personnel. Three pairs of gloves (length, 45 cm) are attached and fixed on the outside wall of the MSCS. The gloves are used to conduct sampling of throat/nasal swabs, sputum, and blood from patients. The gap between the board and the building is only 0.2 cm (sealed with silicone sealant). ED personnel communicate with patients using a small two-way broadcast system. Medical waste is put in specific trashcans installed in the table outside the MSCS. With full physical protection, the personnel conducting the sampling procedure need to wear only their N95 mask and gloves. After we activated the station, our PPE, sampling time, and sanitization resources were considerably conserved during the 4-week observation period. The MSCS obviously saved time and PPE. It elevated the efficiency and capacity of the ED for handling potential community infections of COVID-19.
Betacoronavirus
;
Clinical Laboratory Techniques
;
Coronavirus Infections
;
diagnosis
;
epidemiology
;
Emergency Service, Hospital
;
organization & administration
;
Humans
;
Mass Screening
;
methods
;
Pandemics
;
Personal Protective Equipment
;
supply & distribution
;
Pneumonia, Viral
;
diagnosis
;
epidemiology
;
Taiwan
;
epidemiology
7.Reality of Kawasaki disease epidemiology
Korean Journal of Pediatrics 2019;62(8):292-296
Epidemiologic studies of Kawasaki disease (KD) have shown a new pattern or change of its occurrence suggestive of its pathophysiology or risk factors from the first patient with KD reported in 1961. The incidence of KD in Northeast Asian countries including Japan, South Korea, China, and Taiwan is 10–30 times higher than that in the United States and Europe. Knowing the true epidemiology of KD in each country and the availability of publications of KD epidemiology also could benefit general health care providers and general population. This would enable the early detection and treatment of KD, ultimately reducing the incidence of coronary artery complications and mortality. Therefore, efforts to investigate the true epidemiology of KD should be continued in every country using a questionnaire survey, National Health Insurance system data, or combined methods depending on each country’s medical environment to ensure high-quality care of patients with KD.
Asian Continental Ancestry Group
;
China
;
Coronary Vessels
;
Epidemiologic Studies
;
Epidemiology
;
Europe
;
Health Personnel
;
Humans
;
Incidence
;
Japan
;
Korea
;
Mortality
;
Mucocutaneous Lymph Node Syndrome
;
National Health Programs
;
Risk Factors
;
Seasons
;
Surveys and Questionnaires
;
Taiwan
;
United States
8.Systematic Review on Research Status of Workplace Violence
Yeo Gyeong YOON ; Kyunghee JUNG-CHOI
The Ewha Medical Journal 2019;42(4):56-64
OBJECTIVES: Research on workplace violence has been conducted, but rarely has been organized systematically. In this study, we summarize the definition and classification of workplace violence studies and review the literature on workplace violence. METHODS: Using academic search engines PubMed, Google Scholar and DBpia, we found 856 papers including “workplace violence” and “adverse social behavior” AND workplace in the title published until December 2018, and 208 papers were selected. The selected papers were classified by continent and country, year of publication, occupation, classification criteria of workplace violence, and research topic. RESULTS: By country, the number of articles in the United States was the most with 40 (19.2%), followed by China 27 (13%), Korea 16 (7.7%), and Taiwan and Australia 15 (7.2%). By job category, healthcare workers accounted for the largest portion with 162 (79.0%) of the total, and 80 of them were conducted on nurses. Other occupations included civil servants, manufacturing workers, toll collectors and wageworkers. Among the classification methods of workplace violence, 147 (67.4%) articles were classified as type and there was a difference in the type of violence defined for each article. In the research topic, 114 (44.2%) articles analyzed the effects of workplace violence, and 105 (40.7%) articles describe the prevalence and characteristics of workplace violence, and 23 (8.9%) articles analyzing the causes of violence. CONCLUSION: The research topic is biased toward the field of healthcare, so it is necessary to expand to include various occupations or other specified occupations. It is also necessary to prepare appropriate measures against workplace violence.
Australia
;
Bias (Epidemiology)
;
China
;
Classification
;
Delivery of Health Care
;
Exposure to Violence
;
Korea
;
Occupations
;
Prevalence
;
Publications
;
Search Engine
;
Taiwan
;
United States
;
Violence
;
Workplace Violence
9.Comparison of trauma systems in Asian countries: a cross-sectional study
Young Hee JUNG ; Dae Han WI ; Sang Do SHIN ; Hideharu TANAKA ; Goh E SHAUN ; Wen Chu CHIANG ; Jen Tang SUN ; Li Min HSU ; Kentaro KAJINO ; Sabariah Faizah JAMALUDDIN ; Akio KIMURA ; James F HOLMES ; Kyoung Jun SONG ; Young Sun RO ; Ki Jeong HONG ; Sung Woo MOON ; Ju Ok PARK ; Min Jung KIM
Clinical and Experimental Emergency Medicine 2019;6(4):321-329
OBJECTIVE: This study aimed to compare the demographic characteristics and trauma service structures and processes of hospitals in 15 countries across the Asia Pacific, and to provide baseline data for the integrated trauma database: the Pan-Asian Trauma Outcomes Study (PATOS).METHODS: Medical directors and emergency physicians at PATOS-participating hospitals in countries across the Asia Pacific were surveyed through a standardized questionnaire. General information, trauma care system data, and trauma emergency department (ED) outcomes at each hospital were collected by email and analyzed using descriptive statistics.RESULTS: Survey data from 35 hospitals across 15 countries were collected from archived data between June 2014 and July 2015. Designated trauma centers were identified as the highest hospital level for trauma patients in 70% of surveyed countries. Half of the hospitals surveyed had special teams for trauma care, and almost all prepared activation protocol documents for these teams. Most hospitals offered specialized trauma education programs, and 72.7% of hospitals had a hospital-based trauma registry. The total number of trauma patients visiting the ED across 25 of the hospitals was 300,376. The overall survival-to-discharge rate was 97.2%; however, it varied greatly between 85.1% and 99.7%. The difference between survival-to-discharge rates of moderate and severe injury groups was highest in Taiwan (41.8%) and lowest in Thailand (18.6%).CONCLUSION: Trauma care systems and ED outcomes vary widely among surveyed hospitals and countries. This information is useful to build further detailed, systematic platforms for trauma surveillance and evidence-based trauma care policies.
Asia
;
Asian Continental Ancestry Group
;
Cross-Sectional Studies
;
Education
;
Electronic Mail
;
Emergencies
;
Emergency Service, Hospital
;
Epidemiology
;
Humans
;
Physician Executives
;
Taiwan
;
Thailand
;
Trauma Centers
10.The Prevalence and Severity of Myopia among Suburban Schoolchildren in Taiwan.
Yo Ping HUANG ; Avichandra SINGH ; Li Ju LAI
Annals of the Academy of Medicine, Singapore 2018;47(7):253-259
INTRODUCTIONWe aimed to determine the prevalence and severity of myopia in suburban schoolchildren. The refractive error, best corrected visual acuity (BCVA) and other ocular indices of 6069 schoolchildren (aged 6 to 15 years) from elementary and junior high schools in Chiayi County, Taiwan were examined in 2013-2015.
MATERIALS AND METHODSSpherical equivalent (SE) was stratified into 4 categories: emmetropia, mild myopia, moderate myopia, and high myopia for underlying analysis. Chi-squared (χ2) tests were used to determine significant associations between myopia and BCVA and age levels. To compare statistical significance among different age levels, values of Bonferroni tests were calculated. Receiver operating characteristic (ROC) curves and correlation coefficient were calculated to assess the correlation between myopia and each ocular index.
RESULTSThe youngest subject diagnosed with myopia was a 7-year-old. Myopia had significant associations with both BCVA and age levels (95% confidence intervals [CI] = 2.553, 2.713 and -0.284, -0.248, respectively), under <0.05. Among the calculated ROC values, BCVA had the highest area of 0.676 with myopia. This further confirmed that BCVA was highly correlated with myopia in schoolchildren. Other ocular indices like intraocular pressure (IOP), pupil distance, ocular alignments, or ocular height had ROC curves below 0.5 to myopia.
CONCLUSIONThis study concluded that the onset of myopia started earlier and progressively worsened with years of investigation among the suburban schoolchildren. Myopia had significant associations with BCVA and age levels. To effectively reduce the prevalence and severity of myopia, it is time to take actions on eye care education for suburban schoolchildren.
Adolescent ; Age of Onset ; Child ; Female ; Humans ; Male ; Myopia ; diagnosis ; epidemiology ; Needs Assessment ; Population ; Prevalence ; Severity of Illness Index ; Taiwan ; epidemiology ; Visual Acuity

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