Time-dependent study entries and exposures in cohort studies can easily be sources of different and avoidable types of bias

Article ID	Journal	Published Year	Pages	File Type
10514040	Journal of Clinical Epidemiology	2012	10 Pages	PDF

Abstract

Since length and time-dependent bias might occur in several medical disciplines, we conclude that understanding and awareness are the best prevention of survival bias.

Keywords

Time-dependent bias Survival bias Selection bias immortal time bias Length bias Time scale

Related Topics

Health Sciences Medicine and Dentistry Public Health and Health Policy

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Time-dependent study entries and exposures in cohort studies can easily be sources of different and avoidable types of bias

Authors

Martin Wolkewitz, Arthur Allignol, Stephan Harbarth, Giulia de Angelis, Martin Schumacher, Jan Beyersmann,