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Mi Ah Han 4 Articles
Prevalence and methodological quality of systematic reviews in Korean medical journals
Seong Jung Kim, Mi Ah Han, Jae Hung Jung, Eu Chang Hwang, Hae Ran Kim, Sang Eun Yoon, Seo-Hee Kim, Pius Kim, So-Yeong Kim
Epidemiol Health. 2023;45:e2023017.   Published online February 6, 2023
DOI: https://doi.org/10.4178/epih.e2023017
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  • 112 Download
  • 1 Web of Science
  • 2 Crossref
AbstractAbstract AbstractSummary PDFSupplementary Material
Abstract
This study aimed to assess and evaluate the prevalence and methodological quality of systematic reviews (SRs) published in major Korean medical journals (KMJs). The top 15 journals with the highest Korean Medical Citation Index, published between 2018 to 2021, were selected. We assessed the methodological quality of SRs using A Measurement Tool to Assess Systematic Reviews 2 (AMSTAR 2). In total, 126 SRs were included, with an average of 32 SRs being reported annually. The overall prevalence of SRs in KMJs was 2.8%, with an increase from 2.6% in 2018 to 3.4% in 2021. Overall, the methodological quality of SRs was low (9.5% low, 90.5% critically low). More than 80% of the studies adhered to critical domain items such as a comprehensive literature search and risk of bias assessment, but for items such as protocol registration and listing excluded studies and the justification for exclusion, the adherence rate was less than 15%. While the number of SRs in KMJs steadily increased, the overall confidence in the methodological quality was low to critically low. Therefore, in order to provide the best evidence for decision-making in clinical and public health areas, editors, reviewers, and authors need to pay more attention to improving the quality of SRs.
Summary
Korean summary
한국의학저널에서 체계적 문헌고찰의 수는 꾸준히 증가했지만 방법론적 품질은 전반적으로 낮았다. 임상 및 공중 보건 분야에서 의사 결정을 위한 최상의 근거를 제공하기 위해 편집자, 심사자 및 저자는 체계적 문헌고찰의 품질을 개선하는 데 더 많은 관심을 기울여야 할 것이다.
Key Message
While the number of systematic reviews in Korean medical journals steadily increased, the overall confidence of methodological quality was low to critically low. Therefore, in order to provide the best evidence for decision-making in clinical and public health areas, editors, reviewers, and authors need to pay more attention to improving the quality of systematic reviews.

Citations

Citations to this article as recorded by  
  • A methodological framework for rigorous systematic reviews: Tailoring comprehensive analyses to clinicians and healthcare professionals
    Stefano Mancin, Marco Sguanci, Giuliano Anastasi, Lea Godino, Alessio Lo Cascio, Emanuela Morenghi, Michela Piredda, Maria Grazia De Marinis
    Methods.2024; 225: 38.     CrossRef
  • The status quo of systematic reviews published in high-impact journals in Korea: a study focused on protocol registration and GRADE use
    Mi Ah Han, Seong Jung Kim, Eu Chang Hwang, Jae Hung Jung
    Epidemiology and Health.2022; 44: e2022108.     CrossRef
Korea Seroprevalence Study of Monitoring of SARS-COV-2 Antibody Retention and Transmission (K-SEROSMART): findings from national representative sample
Jina Han, Hye Jin Baek, Eunbi Noh, Kyuhyun Yoon, Jung Ae Kim, Sukhyun Ryu, Kay O Lee, No Yai Park, Eunok Jung, Sangil Kim, Hyukmin Lee, Yoo-Sung Hwang, Jaehun Jung, Hun Jae Lee, Sung-il Cho, Sangcheol Oh, Migyeong Kim, Chang-Mo Oh, Byengchul Yu, Young-Seoub Hong, Keonyeop Kim, Sun Jae Jung, Mi Ah Han, Moo-Sik Lee, Jung-Jeung Lee, Young Hwangbo, Hyeon Woo Yim, Yu-Mi Kim, Joongyub Lee, Weon-Young Lee, Jae-Hyun Park, Sungsoo Oh, Heui Sug Jo, Hyeongsu Kim, Gilwon Kang, Hae-Sung Nam, Ju-Hyung Lee, Gyung-Jae Oh, Min-Ho Shin, Soyeon Ryu, Tae-Yoon Hwang, Soon-Woo Park, Sang Kyu Kim, Roma Seol, Ki-Soo Park, Su Young Kim, Jun-wook Kwon, Sung Soon Kim, Byoungguk Kim, June-Woo Lee, Eun Young Jang, Ah-Ra Kim, Jeonghyun Nam, The Korea Community Health Survey Group, Soon Young Lee, Dong-Hyun Kim
Epidemiol Health. 2023;45:e2023075.   Published online August 17, 2023
DOI: https://doi.org/10.4178/epih.e2023075
  • 4,453 View
  • 191 Download
  • 3 Web of Science
  • 1 Crossref
AbstractAbstract AbstractSummary PDFSupplementary Material
Abstract
OBJECTIVES
We estimated the population prevalence of antibodies to severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), including unreported infections, through a Korea Seroprevalence Study of Monitoring of SARS-CoV-2 Antibody Retention and Transmission (K-SEROSMART) in 258 communities throughout Korea.
METHODS
In August 2022, a survey was conducted among 10,000 household members aged 5 years and older, in households selected through two stage probability random sampling. During face-to-face household interviews, participants self-reported their health status, COVID-19 diagnosis and vaccination history, and general characteristics. Subsequently, participants visited a community health center or medical clinic for blood sampling. Blood samples were analyzed for the presence of antibodies to spike proteins (anti-S) and antibodies to nucleocapsid proteins (anti-N) SARS-CoV-2 proteins using an electrochemiluminescence immunoassay. To estimate the population prevalence, the PROC SURVEYMEANS statistical procedure was employed, with weighting to reflect demographic data from July 2022.
RESULTS
In total, 9,945 individuals from 5,041 households were surveyed across 258 communities, representing all basic local governments in Korea. The overall population-adjusted prevalence rates of anti-S and anti-N were 97.6% and 57.1%, respectively. Since the Korea Disease Control and Prevention Agency has reported a cumulative incidence of confirmed cases of 37.8% through July 31, 2022, the proportion of unreported infections among all COVID-19 infection was suggested to be 33.9%.
CONCLUSIONS
The K-SEROSMART represents the first nationwide, community-based seroepidemiologic survey of COVID-19, confirming that most individuals possess antibodies to SARS-CoV-2 and that a significant number of unreported cases existed. Furthermore, this study lays the foundation for a surveillance system to continuously monitor transmission at the community level and the response to COVID-19.
Summary
Korean summary
인구집단을 기반으로 하여 대표성 있는 표본을 추출하여 COVID-19 항체유병률 조사를 전국적으로 수행함으로 지역사회 단위에서 지속적으로 모니터링할 수 있는 COVID-19 감시체계 구축의 기반을 마련하였다. 2022년 8월 우리나라 국민의 대부분이 COVID-19에 대한 항체를 보유하고 있었고 인구 3명 중 1명은 미확진 감염자로 추정되었다.
Key Message
The K-SEROSMART represents the first nationwide, community-based seroepidemiologic survey of COVID-19. In August 2022, most of the Korean people had antibodies to COVID-19, and one in three people was estimated to have an unreported infection. This study lays the foundation for a surveillance system to continuously monitor transmission at the community level and the response to COVID-19.

Citations

Citations to this article as recorded by  
  • Infection-mediated immune response in SARS-CoV-2 breakthrough infection and implications for next-generation COVID-19 vaccine development
    Sho Miyamoto, Tadaki Suzuki
    Vaccine.2024; 42(6): 1401.     CrossRef
The status quo of systematic reviews published in high-impact journals in Korea: a study focused on protocol registration and GRADE use
Mi Ah Han, Seong Jung Kim, Eu Chang Hwang, Jae Hung Jung
Epidemiol Health. 2022;44:e2022108.   Published online November 15, 2022
DOI: https://doi.org/10.4178/epih.e2022108
  • 2,832 View
  • 66 Download
AbstractAbstract AbstractSummary PDFSupplementary Material
Abstract
OBJECTIVES
This study investigated the status quo of systematic reviews published in major journals in Korea from the perspective of protocol registration and adopting the grading of recommendation, assessment, development and evaluation (GRADE) system.
METHODS
We examined systematic reviews published in Korea’s top 15 medical journals from 2018 to 2021. Teams of 2 reviewers assessed the studies’ eligibility criteria and extracted data independently and in duplicate. We collected information on study characteristics, protocol registration, and GRADE use of the included reviews, and reviewed the “Instructions for Authors” of the selected journals to assess any guidance related to systematic reviews.
RESULTS
Out of the 126 identified reviews, 18 (14.3%) reported that they registered or published their protocol. Only 5 (4.0%) rated the certainty of evidence; and all 5 used the GRADE system. Only 6 of 15 journals mentioned systematic reviews in their “Instructions for Authors.” Six journals endorsed the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) framework for systematic review reporting (2 mandatory, 3 recommended, and 1 unclear). None of the journals included mentioned protocol registration or certainty of evidence in their authors’ guidelines.
CONCLUSIONS
Overall, the proportion of systematic reviews that had prior protocol registration or used the GRADE approach to rate the certainty of evidence was very low. Our study highlights the need for adherence to systematic review standards in medical journals in Korea, including prior protocol registration and certainty of evidence assessment. Our review will help improve the quality of systematic reviews in Korea.
Summary
Korean summary
한국 의학 저널에서 계획서를 사전에 등록하거나 근거의 확실성을 평가하기 위해 GRADE 접근 방식을 사용한 체계적 문헌고찰의 분율은 낮았다. 우리의 연구는 계획서 등록 및 근거의 확실성 평가를 포함하여 체계적 문헌고찰의 방법론적 표준 준수의 필요성을 강조한다.
Key Message
The proportion of systematic reviews that had prior protocol registration or used the GRADE approach to rate the certainty of evidence was very low in Korean medical journals, and our study highlights the need for adherence to systematic review standards in medical journals in Korea, including prior protocol registration and certainty of evidence assessment.
Metabolic Syndrome and Serum Alanine Aminotransferase Levels in Korean Adults : The Third Korea National Health and Nutrition Examination Survey (KNHANES III), 2005.
Mi Ah Han, So Yeon Ryu, Jong Park, Myung Geun Kang, Ki Soon Kim
Korean J Epidemiol. 2008;30(1):25-33.   Published online June 30, 2008
DOI: https://doi.org/10.4178/kje.2008.30.1.25
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AbstractAbstract PDF
Abstract
PURPOSE
The aim of this study was to investigate the association between the metabolic syndrome and alanine aminotransferase(SGPT) levels in Korean adults.
METHODS
The study subjects were 4,325 adults aged > or = 19 years without an apparent cause of liver disease from the Third Korea National Health and Nutrition Examination Survey(2005). The metabolic syndrome was defined using criteria established by the NCEP/ATP III, while abdominal obesity was assessed based on the Asia-Pacific guidelines. Subjects with SGPT > or = 40 IU/L were considered to have elevated SGPT levels. Demographic characteristics, waist circumference, blood pressure, triglyceride, HDL cholesterol, fasting blood sugar were recorded for statistical analysis.
RESULTS
The prevalence of elevated SGPT levels was significantly increase with the presence of the metabolic syndrome and its components. In multiple logistic regression analyses, odds ratio for the elevated SGPT levels was significantly high in the subjects with the metabolic syndrome compared to the subjects without metabolic syndrome after adjusted for socio-demographic characteristics and health-related behavior.
CONCLUSIONS
The metabolic syndrome was independently associated with SGPT levels in Korean adults.
Summary

Epidemiol Health : Epidemiology and Health