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Yun-Chul Hong 4 Articles
Age-specific effects of ozone on pneumonia in Korean children and adolescents: a nationwide time-series study
Kyoung-Nam Kim, Youn-Hee Lim, Sanghyuk Bae, In Gyu Song, Soontae Kim, Yun-Chul Hong
Epidemiol Health. 2022;44:e2022002.   Published online December 28, 2021
DOI: https://doi.org/10.4178/epih.e2022002
  • 5,894 View
  • 446 Download
AbstractAbstract AbstractSummary PDFSupplementary Material
Abstract
OBJECTIVES
The aim of this study was to estimate the age-specific effects of 8-hour maximum ozone levels on pneumonia in children and adolescents.
METHODS
We performed quasi-Poisson regression analyses for individuals of 0-4 years, 5-9 years, 10-14 years, and 15-19 years of age using nationwide time-series data from the Korea (2011-2015). We constructed distributed lag linear models employing a generalized difference-in-differences method and controlling for other air pollutants.
RESULTS
A 10.0-parts per billion increase in 8-hour maximum ozone levels was associated with a higher risk of hospital admissions due to pneumonia at 0-4 (relative risk [RR], 1.02; 95% confidence interval [CI], 1.01 to 1.03) and 5-9 years of age (RR, 1.06; 95% CI, 1.04 to 1.08), but not at 10-14 (RR, 1.01; 95% CI, 0.98 to 1.04) or 15-19 years of age (RR, 1.01; 95% CI, 0.97 to 1.06). The association between ozone and hospital admissions due to pneumonia was stronger in cool seasons (from November to April) than in warm seasons (from May to October), but was similar between boys and girls.
CONCLUSIONS
Short-term exposure to ozone was associated with a higher risk of pneumonia at 0-4 years and 5-9 years of age, but not at 10-14 years or 15-19 years of age. Our findings can help identify vulnerable periods, determine the target populations for public health interventions, and establish air pollution standards.
Summary
Korean summary
-어린이와 청소년에서 대기오염물질인 오존에 단기 노출되었을 때 폐렴으로 인한 입원 위험이 증가하는지를 건강보험공단 청구자료를 이용하여 구축한 시계열자료로 분석하였다. -0-4세, 5-9세 군에서는 오존 단기 노출 시 폐렴으로 인한 입원 위험이 증가하였으나 10-14세, 15-19세 군에서는 입원 위험 증가가 관찰되지 않았다.
Key Message
• The effects of ozone levels on hospital admissions for pneumonia were evaluated. • We used quasi-Poisson time-series models and a difference-in-differences method. • Ozone levels increased hospital admissions for pneumonia at ages 0–4 and 5–9 years. • Evidence for the effects of ozone levels on pneumonia was not found at older ages.
The general public’s perspectives on telemedicine during the COVID-19 pandemic in Korea: analysis of a nationwide survey
EunKyo Kang, Hyejin Lee, Ki Jeong Hong, Jieun Yun, Jin Yong Lee, Yun-Chul Hong
Epidemiol Health. 2022;44:e2022020.   Published online February 4, 2022
DOI: https://doi.org/10.4178/epih.e2022020
  • 5,732 View
  • 439 Download
AbstractAbstract AbstractSummary PDFSupplementary Material
Abstract
OBJECTIVES
We investigated the awareness, experience, approval, intention to use, and the desired type of telemedicine among Korean general public.
METHODS
From November to December 2020, we conducted an online self-reported survey on awareness, experience, approval, and intent to use telemedicine services among Korean residents aged 20 years or older. A total of 2,097 participants completed the survey.
RESULTS
Of the 2,097 participants, 1,558 (74.3%) were aware of, 1,198 (57.1%) approved of, and 1,474 (70.3%) had the intention to use telemedicine. Participants from regions other than the Seoul metropolitan area and Daegu–Gyeongbuk Province (adjusted odds ratio [aOR], 1.29; 95% confidence interval [CI], 1.02 to 1.63), households with a monthly household income of US$6,000 or more (aOR, 1.44; 95% CI, 1.01 to 2.08), participants who had a college/university or associate’s degree (aOR, 1.35. 95% CI, 1.04 to 1.75) or a master’s degree or above (aOR, 1.73; 95% CI, 1.20 to 2.50), and housewives (aOR, 1.30; 95% CI, 1.03 to 1.64) had higher odds of approval. Elderly participants, those with a chronic disease (aOR, 1.26; 95% CI, 1.04 to 1.54), those who had experienced delays of healthcare services (aOR, 1.94; 95% CI, 1.27 to 2.96), and those who had experience with telemedicine (aOR, 4.28; 95% CI, 1.69 to 10.82) were more likely to intend to use telemedicine services. Regarding types of telemedicine, teleconsultation between doctors showed the highest approval rate (73.1%).
CONCLUSIONS
In the context of the coronavirus disease 2019 pandemic, more than 70% of participants had already used or intended to use telemedicine at some point. Groups with a substantial need for telemedicine were more in favor of telemedicine.
Summary
Korean summary
대표성 있는 대상자에 대해 설문조사를 시행하였을 때, 74.3%가 원격의료에 대해 알고 있었다. 코로나19 유행지역, 소득이 높은 군, 대졸자 혹은 그 이상, 주부는 원격의료에 찬성할 가능성이 높았으며만성질환이 있는 고령자, 의료이용에 지연을 겪었던 사람, 원격의료를 이용해 본 사람은 원격의료 사용 의향이 더 높았다.
Key Message
We conducted an online self-reported survey on awareness, experience, approval, and intent to use telemedicine services among Korean residents aged 20 years or older. In the context of the coronavirus disease 2019 pandemic, more than 70% of participants had already used or intended to use telemedicine at some point.
The Association between occupational stress level and health-related productivity loss among Korean employees
Jonghee Chung, Jin-Hyo Kim, Jae Yoon Lee, Hee Seok Kang, Dong-wook Lee, Yun-Chul Hong, Moyeol Kang
Epidemiol Health. 2022;e2023009.   Published online December 28, 2022
DOI: https://doi.org/10.4178/epih.e2023009    [Accepted]
  • 248 View
  • 18 Download
AbstractAbstract PDF
Abstract
Objectives
Occupational stress management is particularly important for successful business operations, given that occupational stress adversely affects workers’ health, eventually lowering their productivity. Therefore, this study aimed to investigate the correlation between occupational stress and health-related productivity loss (HRPL) among Korean workers.
Methods
In 2021, 1, 078 workers participated in a web-based questionnaire survey. HRPL was measured using the Work Productivity and Activity Impairment Questionnaire, and occupational stress was measured using the Korean Occupational Stress Scale-Short Form. Occupational stress level was divided into tertiles (low, intermediate, and high), and the low occupational stress group was used as the reference group. Using a generalised linear model, differences in labour productivity loss according to the levels of occupational stress were tested after adjusting for demographic characteristics such as age, gender, education level, household income, occupation, and underlying medical conditions.
Results
Non-parametric regression analysis of HRPL according to occupational stress showed that as occupational stress increased, so did HRPL. A statistically significant difference was observed in the HRPL of the intermediate and high occupational stress level groups compared to that of the low occupational stress level group.
Conclusions
Our results support the hypothesis that high occupational stress is associated with decreased labour productivity.
Summary
Korean summary
Key Message
Association between weekly fruit and vegetable consumption and depressive symptoms: results from the Korean Elderly Environmental Panel study
Youjeong Yuk, Chae-Rin Han, Yoonyoung Jang, Yun-Chul Hong, Yoon-Jung Choi
Epidemiol Health. 2021;43:e2021029.   Published online April 20, 2021
DOI: https://doi.org/10.4178/epih.e2021029
  • 7,270 View
  • 361 Download
  • 1 Citations
AbstractAbstract AbstractSummary PDFSupplementary Material
Abstract
OBJECTIVES
Although previous studies have investigated the correlation between fruit and vegetable consumption and depression, the results remain inconclusive. The present study aimed to investigate the association between weekly fruit and vegetable consumption and depressive symptoms in elderly Koreans.
METHODS
A multiple covariate linear regression analysis was performed using the data of 1,226 elderly individuals ≥ 60 years of age who participated in the Korean Elderly Environmental Panel II study from 2012 to 2014. Depressive symptoms were evaluated using the Korean version of the Short form Geriatric Depression Scale (SGDS-K). Generalized linear mixed-effects models were constructed to analyze the repeated measurements of 305 people who participated in the survey every year.
RESULTS
After adjusting for confounders, SGDS-K scores were negatively associated with the frequency of weekly fruit consumption as follows (β [95% confidence interval; CI]: -0.17 [-0.28 to -0.05], -0.17 [-0.27 to -0.07], -0.42 [-0.54 to 0.29], and -0.33 [-0.44 to -0.21]) for less than 1 time/wk, 1-3 times/wk, 4-6 times/wk, and daily, respectively, compared to no consumption. The SGDS-K scores were also negatively associated with the frequency of vegetable consumption (β [95% CI]: -0.86 [-1.18 to -0.55], -0.18 [-0.35 to -0.01], -0.36 [-0.53 to -0.18], and -0.15 [-0.29 to 0.00]) in the above order, respectively.
CONCLUSIONS
Fruit consumption was inversely associated with depression levels in a dose-dependent manner. Although there was no dose-response relationship between vegetable consumption and the level of depression, it was negatively associated with SGDS-K scores.
Summary
Korean summary
KEEP-II 데이터를 활용하여 한국 노년층의 주간 과일 및 채소 섭취 빈도와 우울증상 간의 상관관계를 알아보았다. 주중 과일을 섭취하는 빈도와 우울증상의 정도 및 우울증 이환 간에서 음의 상관관계가 있었으며 양반응관계가 나타났다. 채소 섭취 빈도의 경우에는 양반응관계가 나타나지 않았으나 채소 섭취 빈도와 우울증상의 정도 간에 음의 상관관계가 있었다.
Key Message
Weekly fruit consumption frequency was inversely associated with the level of depression in a dose-dependent manner in Korean elderly population who participated in KEEP-II study. Although there was no dose-response relationship between vegetable consumption and the level of depression, vegetable consumption frequency was negatively associated with the level of depression.

Citations

Citations to this article as recorded by  
  • Longitudinal correlates of fruit and vegetable consumption with depressive symptoms among middle-aged and older adults in South Africa
    Supa Pengpid, Karl Peltzer
    BMC Psychology.2022;[Epub]     CrossRef

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