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Case–control study

A case–control study (also known as case–referent study) is a type of observational study in which two existing groups differing in outcome are identified and compared on the basis of some supposed causal attribute. Case–control studies are often used to identify factors that may contribute to a medical condition by comparing subjects who have the…

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Definition

Cohort studiesPowerBiasConfounding
4 related topics

Analysis

Relative riskRare disease assumptionIncidence rate ratio
3 related topics

Strengths and weaknesses

Randomized controlled trialsHierarchy of evidence
2 related topics

Examples

Richard DollBradford Hill
2 related topics

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Case–control study

Nodes20
Edges19
Triples17
Avg. degree1.9
Density0.1
Components1

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Case–control study

Top relations

related to Examples · 6
Case–control study → Bradford Hill, One, Opponents, Richard Doll, They, US
related to Strengths and weaknesses · 5
Case–control study → Case, Compared, In, The, They
related to Definition · 3
Case–control study → Epidemiology, Porta's Dictionary, The
see also · 1
Case–control study → Nested

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Important terminology

control case study studies risk retrospective disease outcome prospective cohort interest often used controls odds ratio also cases factors may

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
suspected risk or protection factorinstance ofduring the study period and relates this to other factors0.80text
the loss of individuals to follow up during the studyinstance ofAll efforts should be made to avoid sources of bias0.80text
Case–control studyrelated to DefinitionPorta's Dictionary0.60section
Case–control studyrelated to DefinitionEpidemiology0.60section
Case–control studyrelated to DefinitionThe0.60section
Case–control studyrelated to ExamplesOne0.60section
Case–control studyrelated to ExamplesRichard Doll0.60section
Case–control studyrelated to ExamplesBradford Hill0.60section
Case–control studyrelated to ExamplesThey0.60section
Case–control studyrelated to ExamplesOpponents0.60section
Case–control studyrelated to ExamplesUS0.60section
Case–control studyrelated to Strengths and weaknessesCase0.60section

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