مقایسهٔ روش‌ها

	مطالعه موردی-شاهدی تودرتوی چندمرکزی	مطالعه کوهورت
حوزه	اپیدمیولوژی	اپیدمیولوژی
خانواده	Process / pipeline	Process / pipeline
سال پیدایش	1990s–2000s (multicenter adaptation)	Mid-20th century (formal epidemiological design codified ~1950s)
پدیدآور	Nested case-control: Norman Mantel (1973); multicenter extension widely adopted in EPIC and other large consortium studies (1990s–2000s)	Doll & Hill (British Doctors Study, 1951); Snow (cholera, 1854)
نوع	Observational analytical study design	Observational longitudinal study design
منبع بنیادین	Thomas, D.C. (1977). Addendum to: Methods of cohort analysis: appraisal by application to asbestos mining. Journal of the Royal Statistical Society, Series A, 140(4), 469–491.	Rothman, K. J., Greenland, S., & Lash, T. L. (2008). Modern Epidemiology (3rd ed.). Lippincott Williams & Wilkins. ISBN: 978-0781755641
نام‌های دیگر	multicenter NCC, multi-site nested case-control, pooled nested case-control, nested case-control within multicenter cohort	longitudinal study, follow-up study, panel study, incidence study
مرتبط	6	6
خلاصه	A multicenter nested case-control study embeds a case-control analysis within two or more geographically or institutionally distinct prospective cohorts. Cases who develop the outcome of interest are identified across all participating sites, then matched to controls sampled from the same risk sets, enabling pooled estimation of exposure-disease associations with greater statistical power and geographic generalizability than any single-center nested design.	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.