Linganisha mbinu

	Utafiti Ulinganifu wa Kesi na Kidhibiti	Utafiti wa Cohort
Nyanja	Epidemiolojia	Epidemiolojia
Familia	Process / pipeline	Process / pipeline
Mwaka wa asili	1950s–1970s	Mid-20th century (formal epidemiological design codified ~1950s)
Mwanzilishi	Brian MacMahon and others; systematised by Schlesselman (1982)	Doll & Hill (British Doctors Study, 1951); Snow (cholera, 1854)
Aina	Observational analytic design	Observational longitudinal study design
Chanzo asilia	Rothman, K. J., Greenland, S., & Lash, T. L. (2008). Modern Epidemiology (3rd ed.). Lippincott Williams & Wilkins. ISBN: 978-0781755474	Rothman, K. J., Greenland, S., & Lash, T. L. (2008). Modern Epidemiology (3rd ed.). Lippincott Williams & Wilkins. ISBN: 978-0781755641
Majina mbadala	matched case-referent study, individually matched case-control, pair-matched case-control, matched case-control design	longitudinal study, follow-up study, panel study, incidence study
Zinazohusiana	5	6
Muhtasari	A matched case-control study is an observational epidemiological design in which each case (a person with the disease or outcome of interest) is paired with one or more controls (persons without the outcome) who share one or more characteristics — such as age, sex, or clinical setting — to control confounding. Exposure history is then compared between cases and their matched controls to estimate the odds ratio of the exposure-disease association.	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.