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| Badanie kohortowe prospektywne× | Badanie kliniczne z randomizacją (RCT)× | |
|---|---|---|
| Dziedzina | Epidemiologia | Epidemiologia |
| Rodzina | Process / pipeline | Process / pipeline |
| Rok powstania≠ | 1950s (systematic application); conceptual roots earlier | 1948 (first rigorously conducted RCT — MRC streptomycin trial) |
| Twórca≠ | Richard Doll and Austin Bradford Hill (landmark application, 1951-1954); cohort methodology formalised by modern epidemiology textbooks | Austin Bradford Hill; MRC Streptomycin Trial team |
| Typ≠ | Observational longitudinal study design | Interventional experimental study |
| Źródło pierwotne≠ | Rothman, K. J., Greenland, S., & Lash, T. L. (2008). Modern Epidemiology (3rd ed.). Lippincott Williams & Wilkins. ISBN: 978-0781755641 | Friedman, L. M., Furberg, C. D., DeMets, D. L., Reboussin, D. M., & Granger, C. B. (2015). Fundamentals of Clinical Trials (5th ed.). Springer. ISBN: 978-3319185385 |
| Inne nazwy | longitudinal cohort study, prospective follow-up study, incidence study, prospective observational cohort | RCT, randomized controlled trial, randomised controlled trial, clinical randomized trial |
| Pokrewne | 6 | 6 |
| Podsumowanie≠ | A prospective cohort study assembles a group of participants who are free of the outcome of interest at baseline, measures their exposures, and then follows them forward in time to record who develops the outcome. By collecting exposure data before outcomes occur, it establishes a clear temporal sequence that supports causal inference — a major advantage over retrospective designs. It is the cornerstone observational method in epidemiology and clinical research. | A randomized clinical trial (RCT) is an experimental study design in which participants are randomly assigned to an intervention group or a control group, then followed prospectively to compare outcomes. Random allocation is the defining feature: it distributes known and unknown confounders across groups by chance, making the RCT the strongest individual study design for establishing causal efficacy of a treatment or intervention under controlled conditions. |
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