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Myung-Jae Hwang 4 Articles
Effect of socioeconomic disparities on the risk of COVID-19 in eight metropolitan cities, the Republic of Korea: a community-based study
Myung-Jae Hwang, Shin Young Park, Tae-Ho Yoon, Jinhwa Jang, Seon-Young Lee, Myeongsu Yoo, Yoo-Yeon Kim, Hae-Kwan Cheong, Donghyok Kwon, Jong-Hun Kim
Epidemiol Health. 2022;e2022107.   Published online November 15, 2022
DOI: https://doi.org/10.4178/epih.e2022107    [Accepted]
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AbstractAbstract PDF
Abstract
Objectives
Socioeconomic disparities have been reported as the main risk factors contributing to the spread of coronavirus disease 2019 (COVID-19) at the community level. We conducted an epidemiological study on the risk of COVID-19 incidence using area deprivation indices (DIs) depending on the characteristics of the susceptible population.
Methods
The database of the confirmed COVID-19 cases in eight metropolitan cities, the Republic of Korea, from January 20, 2020 to December 31, 2021, was combined with the area DIs and standardized prevalence of diabetes and hypertension from the community health survey. The relative risk (RR) was estimated using a generalized linear model with Poisson distribution by age group.
Results
The risk of COVID-19 incidence increased with the increasing age group, especially in patients aged ≥75 years. The RR per interquartile range increment of total social deprivation index (total SDI) was 1.54 (95% confidence interval [CI]: 1.34–1.70) in the COVID-19 incidence. Especially, the risk of COVID-19 incidence in the first wave was about three times higher in the region belonging to the lowest socioeconomic status than in the region with the highest socioeconomic status. The risk was 3.08 (95% CI: 2.42 to 3.78) based on the total SDI and 3.13 (95% CI: 2.53 to 3.83) based on the social deprivation index.
Conclusions
This study provides scientific evidence that socioeconomic inequity is an important risk factor for the spread of COVID-19. This finding suggests that a mid-to-long-term strategy is needed for the susceptible population to reduce the burden of COVID-19 in the community.
Summary
Korean summary
Key Message
Evaluation of clinical severity according to primary infection variants in patients with suspected SARS-CoV-2 reinfection
Myung-Jae Hwang, Insob Hwang, Chungmin Park, Hanul Park, Taejong Son, Jong-Hun Kim
Epidemiol Health. 2022;e2023007.   Published online December 21, 2022
DOI: https://doi.org/10.4178/epih.e2023007    [Accepted]
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  • 60 Download
AbstractAbstract PDF
Abstract
Objectives
We aimed to evaluate the severity of suspected severe acute respiratory syndrome coronavirus 2 reinfection according to the concern of variants in the Republic of Korea.
Methods
The database of COVID-19 cases reported through the integrated system in an epidemiological investigation, by the Korea Disease Control and Prevention Agency, from January 20, 2020 to May 7, 2022, was combined with the Health Insurance Review and Assessment Service system. The severity odds ratio (SOR) at secondary infection episodes compared with primary infection was estimated using a generalized linear model with binomial distribution.
Results
In all patients, the SOR of reinfection was 0.89 (95% confidence interval [CI]: 0.82–0.95), and the severity was relieved compared with their first infection episode. Patients in the vaccinated group within 91 days, the SOR was more declined than 91 days after vaccination as 0.85 (95% CI: 0.74–0.98). However, despite the vaccination, in patients with primary and secondary infections caused by Omicron, the severity was less relieved than in primarily infected episodes with other variants.
Conclusions
We could make efforts to relieve the severity of the vulnerable populations that are likely to lead to death by recommending booster vaccinations in case of a resurgence.
Summary
Korean summary
Key Message
Establishment of the Korea National Health and Nutrition Examination Survey air pollution study dataset for the researchers on the health impact of ambient air pollution
Myung-Jae Hwang, Jisun Sung, Miryoung Yoon, Jong-Hun Kim, Hui-Young Yun, Dae-Ryun Choi, Youn-Seo Koo, Kyungwon Oh, Sungha Yun, Hae-Kwan Cheong
Epidemiol Health. 2021;43:e2021015.   Published online February 8, 2021
DOI: https://doi.org/10.4178/epih.e2021015
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  • 3 Citations
AbstractAbstract AbstractSummary PDFSupplementary Material
Abstract
To provide a nationwide representative dataset for the study on health impact of air pollution, we combined the data from the Korea National Health and Nutrition Examination Survey with the daily air quality and weather data by matching the date of examination and the residential address of the participants. The database of meteorological factors and air quality as sources of exposure data were estimated using the Community Multiscale Air Quality model. The linkage dataset was merged by three ways; administrative district, si-gun-gu (city, county, and district), and geocode (in latitude and longitude coordinate units) based on the participants’ residential address, respectively. During the study period, the exposure dataset of 85,018 individuals (38,306 men and 46,712 women) whose examination dates were recorded were obtained. According to the definition of exposure period, the dataset was combined with the data on short-term, mid-term, and long-term exposure to air pollutants and the meteorological indices. Calculation of the daily merged dataset’s average air pollution linked by si-gun-gu and geocode units showed similar results. This study generated a daily average of meteorological indices and air pollution exposure dataset for all regions including rural and remote areas in Korea for 11 years. It is expected to provide a platform for the researchers studying the health impact of air pollution and climate change on the representative population and area, which may facilitate the establishment of local health care plans by understanding the residents’ health status at the local as well as national level.
Summary
Korean summary
-2007년부터 2017년까지 11년간 국민건강영양조사의 검진조사 대상자의 검진일자와 지리정보를 기준으로 85,018명에 대해 기상 및 대기오염 모델링 자료를 결합하여 조사 대상자의 거주지주소를 이용하여 시·군·구 단위와 주소 기반 위경도 좌표를 기준으로 각각 노출자료를 결합함. -대기오염의 단기노출, 중기노출, 장기노출의 건강영향을 평가하기 위해 지연효과(lag effect)를 적용하여 각 건강자료와 결합함. -기상 및 대기오염 모델링 자료와 연계된 국민건강영양조사의 활용을 위한 data profile을 제시함.
Key Message
-We built a dataset for air pollution research by combining meteorological and air pollution modeling data through CMAQ for 85,018 individuals based on the date of examination and geographic information of the Korea National Health and Nutrition Examination Survey participants for 11 years, from 2007 to 2017. -Each exposure data was combined based on si-gun-gu (city, county, and district) and geocode (in latitude and longitude coordinate units) based on the participants’ residential address. -To evaluate the health effects of short-, medium- and long-term air pollution exposure, the lag values of days, months, and years was applied and combined with each health data. -A data profile was presented for the Korea National Health and Nutrition Examination Survey linked to meteorological and air pollution modeling data.

Citations

Citations to this article as recorded by  
  • Effect of Short- to Long-Term Exposure to Ambient Particulate Matter on Cognitive Function in a Cohort of Middle-Aged and Older Adults: KoGES
    Jane J. Lee, Ji Hyun Kim, Dae Sub Song, Kyoungho Lee
    International Journal of Environmental Research and Public Health.2022; 19(16): 9913.     CrossRef
  • Long-Term Effects of Ambient Particulate and Gaseous Pollutants on Serum High-Sensitivity C-Reactive Protein Levels: A Cross-Sectional Study Using KoGES-HEXA Data
    Ji Hyun Kim, Hae Dong Woo, Sunho Choi, Dae Sub Song, Jung Hyun Lee, Kyoungho Lee
    International Journal of Environmental Research and Public Health.2022; 19(18): 11585.     CrossRef
  • Effects of exposure to ambient air pollution on pulmonary function impairment in Korea: the 2007-2017 Korea National Health and Nutritional Examination Survey
    Soo Beom Choi, Sungha Yun, Sun-Ja Kim, Yong Bum Park, Kyungwon Oh
    Epidemiology and Health.2021; 43: e2021082.     CrossRef
Ambient air quality and subjective stress level using Community Health Survey data in Korea
Myung-Jae Hwang, Hae-Kwan Cheong, Jong-Hun Kim, Youn Seo Koo, Hui-Young Yun
Epidemiol Health. 2018;40:e2018028.   Published online June 28, 2018
DOI: https://doi.org/10.4178/epih.e2018028
  • 9,594 View
  • 198 Download
  • 8 Citations
AbstractAbstract AbstractSummary PDFSupplementary Material
Abstract
OBJECTIVES
Air pollution causes various disease in exposed populations, and can lead to premorbid health effects manifested as both physical and psychological functional impairment. The present study investigated the subjective stress level in daily life in relation to the level of air pollution.
METHODS
Data from the Community Health Survey (2013), comprising 99,162 men, and 121,273 women residing in 253 healthcare administrative districts, were combined with air pollutant concentration modelling data from the Korean Air Quality Forecasting System, and were stratified by subjective stress levels into five strata for multiple logistic regression. Levels of exposure were divided into five quintiles according to the annual concentration of nitrogen dioxide (NO2), and were analyzed using a single-pollutant model using NO2 concentration only, and a multi-pollutant model adjusted for the concentration of particulate matter <10 μm in diameter.
RESULTS
Analysis of men and women in various age groups showed the highest odds ratio (OR) for subjective stress level at the highest NO2 concentration quintile in men and women aged 30–64 years (men: 2.91; 95% confidence interval [CI], 2.12 to 4.01; women: 1.82; 95% CI, 1.32 to 2.51). As the NO2 concentration quintile increased, the OR increased. Men showed higher ORs than women in all strata.
CONCLUSIONS
In the present study, annual NO2 concentrations were found to be associated with subjective stress levels. This association was especially clear among socioeconomically active men and women aged 30-64 years.
Summary
Korean summary
2013년 지역사회건강조사를 이용하여 253개 보건행정지역단위로 Korean Air Quality Forecasting System (KAQFS) 대기물질농도 모델링자료를 결합하여 주관적 스트레스 정도에 따라 5분위로 범주화하여 다항로지스틱회귀을 하였다. 본 연구에서는 연평균 NO2농도와 주관적 스트레스 정도가 관련이 있는 것으로 나타났다. 특히, 사회 경제적 활동이 활발한30세 이상 65세 미만의 남성과 여성에서 관련성이 뚜렷하게 나타났다.
Key Message

Citations

Citations to this article as recorded by  
  • Long-term air pollution exposure, greenspace and health-related quality of life in the ECRHS study
    Anne Boudier, Iana Markevych, Bénédicte Jacquemin, Michael J. Abramson, Simone Accordini, Bertil Forsberg, Elaine Fuertes, Judith Garcia-Aymerich, Joachim Heinrich, Ane Johannessen, Bénédicte Leynaert, Isabelle Pin, Valérie Siroux
    Science of The Total Environment.2022; 849: 157693.     CrossRef
  • The impact of black carbon (BC) on mode-specific galvanic skin response (GSR) as a measure of stress in urban environments
    Xiuleng Yang, Juan Pablo Orjuela, Emma McCoy, Guillem Vich, Esther Anaya-Boig, Ione Avila-Palencia, Christian Brand, Glòria Carrasco-Turigas, Evi Dons, Regine Gerike, Thomas Götschi, Mark Nieuwenhuijsen, Luc Int Panis, Arnout Standaert, Audrey de Nazelle
    Environmental Research.2022; 214: 114083.     CrossRef
  • Effects of ambient air pollution on psychological stress and anxiety disorder: a systematic review and meta-analysis of epidemiological evidence
    Tanwi Trushna, Vikas Dhiman, Dharma Raj, Rajnarayan R. Tiwari
    Reviews on Environmental Health.2021; 36(4): 501.     CrossRef
  • Green space, air pollution, traffic noise and saliva cortisol in children
    Lizan D. Bloemsma, Alet H. Wijga, Jochem O. Klompmaker, Gerard Hoek, Nicole A. H. Janssen, Marieke Oldenwening, Gerard H. Koppelman, Erik Lebret, Bert Brunekreef, Ulrike Gehring
    Environmental Epidemiology.2021; 5(2): e141.     CrossRef
  • Effects of exposure to ambient air pollution on pulmonary function impairment in Korea: the 2007-2017 Korea National Health and Nutritional Examination Survey
    Soo Beom Choi, Sungha Yun, Sun-Ja Kim, Yong Bum Park, Kyungwon Oh
    Epidemiology and Health.2021; 43: e2021082.     CrossRef
  • Impacts of ambient air pollution on glucose metabolism in Korean adults: a Korea National Health and Nutrition Examination Survey study
    Myung-Jae Hwang, Jong-Hun Kim, Youn-Seo Koo, Hui-Young Yun, Hae-Kwan Cheong
    Environmental Health.2020;[Epub]     CrossRef
  • A Development of PM Concentration Reanalysis Method using CMAQ with Surface Data Assimilation and MAIAC AOD in Korea
    Youn-Seo Koo, Dae-Ryun Choi, Hui-Young Yun, Geon-Woo Yoon, Joung-Beom Lee
    Journal of Korean Society for Atmospheric Environment.2020; 36(4): 558.     CrossRef
  • Short-Term Impacts of Ambient Air Pollution on Health-Related Quality of Life: A Korea Health Panel Survey Study
    Myung-Jae Hwang, Jong-Hun Kim, Hae-Kwan Cheong
    International Journal of Environmental Research and Public Health.2020; 17(23): 9128.     CrossRef

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