방법 비교

	패널 기반 상관 연구	코호트 연구
분야	연구설계	역학
계열	Process / pipeline	Process / pipeline
기원 연도	1970s–1980s (formal panel analysis methods)	Mid-20th century (formal epidemiological design codified ~1950s)
창시자	Panel methodology systematized by economists and sociologists, notably Kessler & Greenberg (1981) and Cheng Hsiao (1986)	Doll & Hill (British Doctors Study, 1951); Snow (cholera, 1854)
유형	Quantitative observational design	Observational longitudinal study design
원전	Kessler, R. C., & Greenberg, D. F. (1981). Linear Panel Analysis: Models of Quantitative Change. Academic Press. ISBN: 9780124053502	Rothman, K. J., Greenland, S., & Lash, T. L. (2008). Modern Epidemiology (3rd ed.). Lippincott Williams & Wilkins. ISBN: 978-0781755641
별칭	panel correlational study, longitudinal correlational panel, panel survey research, repeated-measures correlational design	longitudinal study, follow-up study, panel study, incidence study
관련	3	6
요약	Panel-based correlational research follows the same individuals, organizations, or units across multiple time points and quantifies associations among variables within that longitudinal structure. Unlike a one-shot correlational survey, the panel design captures temporal ordering and within-unit change, enabling researchers to test whether earlier values of one variable predict later values of another while statistically controlling for stable individual differences.	A cohort study assembles a group of individuals who share a common starting point — typically freedom from the outcome of interest — and follows them over time to observe who develops the outcome. By comparing incidence rates between exposed and unexposed subgroups, researchers can estimate relative risk and absolute risk differences. Cohort studies are the gold-standard observational design for measuring disease incidence and establishing temporal relationships between exposure and outcome.