방법 비교

	매칭된 생태학적 연구	짝짓기 환자-대조군 연구
분야	역학	역학
계열	Process / pipeline	Process / pipeline
기원 연도	1970s–1990s (methodological consolidation)	1950s–1970s
창시자	Extension of classical ecological study design; matching principles formalized in 20th-century epidemiology	Brian MacMahon and others; systematised by Schlesselman (1982)
유형	Observational study design	Observational analytic design
원전	Morgenstern, H. (1998). Ecologic studies in epidemiology: Concepts, principles, and methods. Annual Review of Public Health, 16, 61–81.	Rothman, K. J., Greenland, S., & Lash, T. L. (2008). Modern Epidemiology (3rd ed.). Lippincott Williams & Wilkins. ISBN: 978-0781755474
별칭	matched ecologic study, geographically matched ecological study, area-matched ecological design, matched aggregate study	matched case-referent study, individually matched case-control, pair-matched case-control, matched case-control design
관련	6	5
요약	A matched ecological study is an observational epidemiological design in which aggregate units — such as geographic areas, communities, or time periods — are systematically paired or matched on key characteristics before comparing exposure and outcome rates. Matching at the group level controls for area-level confounders and improves comparability between exposed and unexposed units, producing more credible estimates of ecological associations than an unmatched counterpart.	A matched case-control study is an observational epidemiological design in which each case (a person with the disease or outcome of interest) is paired with one or more controls (persons without the outcome) who share one or more characteristics — such as age, sex, or clinical setting — to control confounding. Exposure history is then compared between cases and their matched controls to estimate the odds ratio of the exposure-disease association.