Immortal time bias for life-long conditions in retrospective observational studies using electronic health records

Abstract Background Immortal time bias is common in observational studies but is typically described for pharmacoepidemiology studies where there is a delay between cohort entry and treatment initiation. Methods This study used the Clinical Practice Research Datalink (CPRD) and linked national morta...

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Autori principali:	Freya Tyrer, Krishnan Bhaskaran, Mark J. Rutherford
Natura:	Artigo
Lingua:	Inglês
Pubblicazione:	BMC 2022-03-01
Serie:	BMC Medical Research Methodology
Soggetti:	Bias (epidemiology) Epidemiologic methods Immortal time bias Electronic health records Life expectancy Observational studies
Accesso online:	https://doi.org/10.1186/s12874-022-01581-1
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