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  1. 181

    Selection bias: neighbourhood controls and controls selected from those presenting to a Health Unit in a case control study of efficacy of BCG revaccination by de Souza Wayner V, Montarroyos Ulisses R, de Albuquerque Maria, Ximenes Ricardo AA, Dantas Odimariles MS, Varejão Patrícia, Rodrigues Laura C

    Published 2007-02-01
    “…When the exposure of interest is offered in a health facility, selection of controls from attenders at the facility may result in over representation of exposure in controls and selection bias.</p>…”
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  2. 182

    The Risk of Selection Bias in a Clinical Multi-Center Cohort Study. Results from the Norwegian Cognitive Impairment After Stroke (Nor-COAST) Study by Kuvås KR, Saltvedt I, Aam S, Thingstad P, Ellekjær H, Askim T

    Published 2020-12-01
    “…The aim of the present study was to investigate whether selection bias occurred by comparing baseline characteristics from participants with non-participants in Nor-COAST.Patients and Methods: Nor-COAST is a prospective cohort multi-center study, recruiting participants from five Norwegian hospitals. …”
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