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| Проспективно проучване на серии от случаи× | Когортно проучване – надлъжен обсервационен дизайн× | |
|---|---|---|
| Област | Епидемиология | Епидемиология |
| Семейство | Process / pipeline | Process / pipeline |
| Година на възникване≠ | Late 19th century onward; formalized in modern clinical epidemiology by the 1970s–1980s | Mid-20th century (formal epidemiological design codified ~1950s) |
| Създател≠ | Evolved from clinical case reporting traditions in 19th–20th century medicine | Doll & Hill (British Doctors Study, 1951); Snow (cholera, 1854) |
| Тип≠ | Observational study design | Observational longitudinal study design |
| Основополагащ източник≠ | Meinert, C. L. (1996). Clinical Trials: Design, Conduct, and Analysis. Oxford University Press. ISBN: 978-0195035681 | Rothman, K. J., Greenland, S., & Lash, T. L. (2008). Modern Epidemiology (3rd ed.). Lippincott Williams & Wilkins. ISBN: 978-0781755641 |
| Други названия | prospective case series study, forward-looking case series, prospective uncontrolled study, prospective observational case series | longitudinal study, follow-up study, panel study, incidence study |
| Свързани≠ | 5 | 6 |
| Резюме≠ | A prospective case series is an observational study design in which a group of patients with a particular condition, exposure, or intervention is identified in advance and followed forward in time according to a pre-specified protocol. Data on outcomes, adverse events, and clinical course are collected as they occur, yielding higher data quality and temporal clarity than retrospective designs. No control group is included, so causal inference is limited, but the design is valuable for characterizing natural disease history, early safety signals, and feasibility of new interventions. | 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. |
| ScholarGateНабор от данни ↗ |
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