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| دراسة حالة وشاهد متعددة المراكز× | دراسة الحالة والشاهد المتداخلة (Nested Case-Control Study)× | |
|---|---|---|
| المجال | علم الأوبئة | علم الأوبئة |
| العائلة | Process / pipeline | Process / pipeline |
| سنة النشأة≠ | Mid-20th century; multicenter framework formalised 1970s–1980s | 1973–1977 |
| صاحب الطريقة≠ | Epidemiology convention; seminal statistical framework by Breslow & Day (IARC, 1980) | Nathan Mantel (1973); D. C. Thomas (1977 formalization) |
| النوع≠ | Observational analytical epidemiological design | Hybrid observational study design |
| المصدر التأسيسي≠ | Breslow, N. E., & Day, N. E. (1980). Statistical Methods in Cancer Research. Volume I: The Analysis of Case-Control Studies. IARC Scientific Publications No. 32. International Agency for Research on Cancer, Lyon. ISBN: 978-9283211327 | 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. link ↗ |
| الأسماء البديلة | multisite case-control study, collaborative case-control study, pooled case-control study, multi-institutional case-control study | NCC study, nested CC design, case-control within cohort, density sampling case-control |
| ذات صلة | 6 | 6 |
| الملخص≠ | A multicenter case-control study is an observational design that identifies individuals who have developed a disease (cases) and disease-free comparators (controls) across two or more study sites simultaneously. By pooling recruitment across hospitals, clinics, or geographic regions, the design achieves larger sample sizes, captures exposure variability over broader populations, and improves the statistical power needed to detect modest odds ratios for rare or heterogeneous diseases. | A nested case-control study is an efficient observational design embedded within a defined cohort. For each participant who develops the outcome of interest (a case), a small number of matched controls are sampled from those still at risk at the same point in time. This density-sampling strategy yields odds ratios that approximate incidence-rate ratios from the full cohort at a fraction of the data-collection cost — making it the preferred alternative when measuring exposures for all cohort members would be prohibitively expensive or technically demanding. |
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