Journal of Preventive Medicine and Public Health

Original Articles

The Association Between PM_2.5 Exposure and Diabetes Mellitus Among Thai Army Personnel: Apisorn Laorattapong, Sarun Poobunjirdkul, Thanapoom Thanapoom, Wiroj Jiamjarasrangsi; J Prev Med Public Health. 2023;56(5):449-457. Published online September 26, 2023; DOI: https://doi.org/10.3961/jpmph.23.292

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Abstract Summary PDF Supplementary Material

Objectives
This study investigated the association between baseline exposures to particulate matter with a diameter < 2.5 microns (PM_2.5) and subsequent temporal changes in PM_2.5 exposure with the incidence of type 2 diabetes among Royal Thai Army personnel.
Methods
A retrospective cohort study was conducted using nationwide health check-up data from 21 325 Thai Army personnel between 2018 and 2021. Multilevel mixed-effects parametric survival statistics were utilized to analyze the relationship between baseline (i.e., PM_2.5-baseline) and subsequent changes (i.e., PM_2.5-change) in PM_2.5 exposure and the occurrence of type 2 diabetes. Hazard ratios (HRs) and 95% confidence intervals (CIs) were employed to assess this association while considering covariates.
Results
There was a significant association between both PM_2.5 baseline and PM_2.5-change and the incidence of type 2 diabetes in a dose-response manner. Compared to quartile 1, the HRs for quartiles 2 to 4 of PM_2.5-baseline were 1.11 (95% CI, 0.74 to 1.65), 1.51 (95% CI, 1.00 to 2.28), and 1.77 (95% CI, 1.07 to 2.93), respectively. Similarly, the HRs for quartiles 2 to 4 of PM_2.5-change were 1.41 (95% CI, 1.14 to 1.75), 1.43 (95% CI, 1.13 to 1.81) and 2.40 (95% CI, 1.84 to 3.14), respectively.
Conclusions
Our findings contribute to existing evidence regarding the association between short-term and long-term exposure to PM_2.5 and the incidence of diabetes among personnel in the Royal Thai Army.

Summary

Key Message
We simultaneously investigated the impact of the baseline and temporal variations in the exposure to particulate matter (PM) with a diameter <2.5 microns (PM2.5) on type 2 diabetes risk among the Royal Thai Army personnel. We found stronger evidence on the impact of the temporal variation in PM2.5 exposure on the disease risk than that of the baseline variation. This finding may reflect the shorter time frame between the increased PM2.5 exposure and changes in fasting plasma glucose level.

Citations

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Influence of Air Pollution Exposures on Cardiometabolic Risk Factors: a Review
Li-Hao Guo, Mohammed Zeeshan, Guo-Feng Huang, Duo-Hong Chen, Min Xie, Jun Liu, Guang-Hui Dong
Current Environmental Health Reports.2023; 10(4): 501. CrossRef

Respiratory Syncytial Virus Outbreak in the Basic Military Training Camp of the Republic of Korea Air Force: Won-Ju Park, Seok-Ju Yoo, Suk-Ho Lee, Jae-Woo Chung, Keun-Ho Jang, Jai-Dong Moon; J Prev Med Public Health. 2015;48(1):10-17. Published online January 14, 2015; DOI: https://doi.org/10.3961/jpmph.14.037

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Abstract PDF

Objectives
An outbreak of acute febrile illness occurred in the Republic of Korea Air Force boot camp from May to July 2011. An epidemiological investigation of the causative agent, which was of a highly infective nature, was conducted.
Methods
Throat swabs were carried out and a multiplex reverse transcriptase-polymerase chain reaction (RT-PCR) assay was performed to identify possible causative factors.
Results
The mean age of patients who had febrile illness during the study period was 20.24 years. The multiplex RT-PCR assay identified respiratory syncytial virus (RSV) as the causative agent. The main symptoms were sore throat (76.0%), sputum (72.8%), cough (72.1%), tonsillar hypertrophy (67.9%), and rhinorrhea (55.9%). The mean temperature was 38.75°C and the attack rate among the recruits was 15.7% (588 out of 3750 recruits), while the mean duration of fever was 2.3 days. The prognosis was generally favorable with supportive care but recurrent fever occurred in 10.1% of the patients within a month.
Conclusions
This is the first epidemiological study of an RSV outbreak that developed in a healthy young adult group. In the event of an outbreak of an acute febrile illness of a highly infective nature in facilities used by a young adult group, RSV should be considered among the possible causative agents.

Summary

Citations

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Respiratory syncytial virus infection and the need for immunization in Korea
Hye Young Kim, Ki Wook Yun, Hee Jin Cheong, Eun Hwa Choi, Hoan Jong Lee
Expert Review of Vaccines.2023;[Epub] CrossRef
COVID-19 outbreak in a military unit in Korea
Chanhee Kim, Young-Man Kim, Namwoo Heo, Eunjung Park, Sojin Choi, Sehyuk Jang, Nayoung Kim, Donghyok Kwon, Young-Joon Park, Byeongseop Choi, Beomman Ha, Kyounghwa Jung, Changbo Park, Sejin Park, Heeyoung Lee
Epidemiology and Health.2021; 43: e2021065. CrossRef

Analysis of the Change of Health Status Among the Republic of Korea Air Force Soldiers During Military Service: Seok-Ju Yoo, Won-Ju Park, Kwan Lee, Hyun-Sul Lim, Hyun-Jin Kim, Suk-Ho Lee; J Prev Med Public Health. 2014;47(4):230-235. Published online July 31, 2014; DOI: https://doi.org/10.3961/jpmph.2014.47.4.230

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Abstract PDF

Objectives
The aim of this study was to investigate whether the health status of Republic of Korea Air Force (ROKAF) soldiers changed after one year of military service. Methods: We selected 483 ROKAF soldiers from the 11 749 recruits who participated in the 2011 physical examination. The selected soldiers underwent another physical examination in 2012 for advancement to senior airman. Data from 2011 and 2012 were merged. To collect data on lifestyle, a questionnaire was sent to all included subjects via the military intranet e-mail service. Results: The percentage of recruits with an abnormal alanine transaminase level (normal range <40 IU/L) decreased from recruitment (13.7%) to the following year (2.7%). Moreover, the percentage of obese soldiers (body mass index ≥25 kg/m2) decreased from recruitment (20.5%) to the following year (10.4%). There was a significant change in mean duration of exercise carried out each day before (0.8±1.3 hours) and after (1.0±0.7 hours) joining the ROKAF service. Conclusions: These ROKAF soldiers were generally in good health before and after joining the armed service. After one year of military service, the health status of most soldiers improved, especially with respect to body mass index and alanine transaminase level.

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Citations

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Behavioral impact of national health campaigns on healthy lifestyle practices among young adults in Singapore: a cross-sectional study
Yong Zhi Khow, Talia Li Yin Lim, Jarret Shoon Phing Ng, Jiaxuan Wu, Chuen Seng Tan, Kee Seng Chia, Nan Luo, Wei Jie Seow
BMC Public Health.2021;[Epub] CrossRef
Strategic Priorities to Improve Effectiveness of Anti-smoking Interventions for the Korean Military: An Application of the Analytic Hierarchy Process
Yun-Kyoung Song, Jae Hyun Kim, Boyoon Choi, Nayoung Han, Myeong Gyu Kim, Jeongsam Lee, Handuk Lee, Jieun Yoon, Beom-Jin Lee, Jung Mi Oh
Military Medicine.2018; 183(7-8): e223. CrossRef

The Effect of Working Noise Exposure and Military Background on the Hearing Threshold.: Kyoo Sang Kim, Ho Keun Chung; Korean J Prev Med. 2003;36(2):137-146.

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Abstract PDF: OBJECTIVES
Impaired hearing is a prevalent occupational hazard, not only in industry, but also in the armed forces. In military life, noise has unusual characteristics, and constitutes a serious hazard to hearing. The aim of this study was to analyze the hearing threshold data in order to compare the hearing loss among shipyard workers, representing different workers, and a military service background. METHODS: A cross-sectional audiological survey, combined with a questionnaire study, was conducted on a stratified random sample of 440 shipyard workers, with long-term exposure to noise. The employees were divided into four groups, according to their working and military service backgrounds, in relation to their exposure to noise. RESULTS: As expected, the working and military noise exposure group (Group I) had significantly poorer hearing than the other groups. The high frequencies (2-8 kHz) showed the greatest difference in terms of poorer hearing in both ears. The prevalence of noise-induced hearing loss (NIHL) was highest in Group I. A logistic regression analysis was applied to determine the dependence of the NIHL in relation to age, smoking, drinking, working duration, ear protection, past history of ear diseases, and working and military service backgrounds, on the noise exposure. The important factors found to be related to the NIHL, in relation to noise exposure were: age, work duration, and working and military service backgrounds. The adjusted odds ratio estimates for NIHL in the right ear were 4.5 times greater (95% CI 1.7-11.6) for the military noise exposed group, and 7.9 times greater (95% CI 2.0-31.3) for the working noise exposed group than in the controls. The hearing thresholds at the pure-tone average and 4 kHz were significantly increased with age and work duration with both the working and military service backgrounds. CONCLUSIONS: From these results, specific preventive programs were planned, which should be assessed by epidemiological surveillance of the military noise exposed population.; Summary

The Incidence of Hepatitis B in Military Service ad the Effect of Asymptomatic HBsAg Carriers on the Incidence.: Rock Kwon Kim, Il Suh, Hung Mo Nam, Kwang Hyub Han; Korean J Prev Med. 1997;30(2):267-278.

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Abstract PDF: The purpose of this study was to investigate the incidence rate of hepatitis B in the military service and to examine the effect of the asymptomatic HBsAg carriers on the incidence of hepatitis B. The subject were 223,270 men who were conscripted to the Korean Army from 1991 to 1994 year. According to the conscripted year, four conscription cohort were constructed. At the screening examination for military service no test for hepatitis B were performed in 1991 and 1992. In 1993, a screening test for hepatitis B were performed and those who were confirmed as HBsAg positive or > or = SGPT 100IU were excluded from conscription. In 1994, the criteria for conscription was changed and those who were HBsAg positive were not excluded from conscription. Only those who were > or =SGPT 100IU were excluded. The main results were as follows ; 1. The positive rate of HBsAg is 5.5% in the conscripted men. 2. The incidence rates of the hepatitis B in 1991 and 1992 conscription cohort were 9.96 and 8.10 per ten thousand per son - year, respectively. The incidence rate of the hepatitis B was 1.34 per ten thousand per son - year in 1993 conscription cohort which was confirmed as HBsAg negative at the screening test, and 7.41 per ten thousand per son - year in 1994 conscription cohort which included the HBsAg positive. 3. The incidence rate of hepatitis B was 99.98 per ten thousand per son- year in HBsAg positive group and 2.25 per ten thousand per son - year in HBsAg negative group. The incidence rate of the group with high SGPT and HBsAg positive was 255 times higher than that of normal population. 4. The incidence of hepatitis B in HBsAg negative group did not increase even though the probability of personal contact with HBsAg positive had been increased. From the above result s, the men who have high SGPT with HBsAg positive should be excluded from military service, and it can not be said that asymptomatic HBsAg carrier s influence on the hepatitis B incidence among the HBsAg negative through personal contact.; Summary

The Effect Of Gunshot Or Cannonade Training During Military Service On Hearing Threshold Levels.: Heon Kim, Soo Hun Cho, Hyun Sul Lim; Korean J Prev Med. 1991;24(1):86-92.

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Abstract PDF: To test if exposure history to rifle fire or cannonade training during military duty can induce hearing loss, history of personal military service and history of gunshot exposure were asked to 228 male college students with self-administrative questionnaire. Otoscopic examination and Rinne's test were performed if any abnormal finding was detected by pure-tone audiometry. Average hearing threshold levels of 500 Hz, 1,000 Hz, 2,000 Hz, 4,000 Hz and threshold levels at 4,000 Hz were calculated for 112 students who were remained after exclusion of cases with history of ear disease, of ototoxic drug administration, and of neuropsychiatric disease, and mean of those were compared between group of students who have completed military duty (completed group) and group of those who have not (not-completed group), and between group exposed(exposed group) and group unexposed to gunshot sound(unexposed group). Mean of average hearing threshold level and mean of threshold levels at 4,000 Hz of completed group and those of exposed group were higher than those of not-completed group and unexposed group, respectively. Proportion of cases that average threshold level was greater than 40 dB of threshold levels at 4,000 Hz was greater than 50 dB were higher also in completed group and exposed group than in duty not-completed group and unexposed group, respectively. Multiple linear regression analysis including age, duration of military service, degree of gunshot sound exposure as independent variables and average hearing threshold level as dependant variable, was performed in order to estimate the effect of age on hearing, and any considerable effect of age on hearing could not be found. In conclusion, hearing impairment can be induced by rifle fire or cannonade training.; Summary

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