Open AccessMethods in health services research: Interpreting the evidence: choosing between randomised and non-randomised studies
Author(s) -
Martin McKee,
Annie Britton,
Nick Black,
Klim McPherson,
Colin Sanderson,
Chris Bain
Publication year - 1999
Publication title -
bmj
Language(s) - English
Resource type - Journals
ISSN - 0959-8138
DOI - 10.1136/bmj.319.7205.312
Subject(s) - medicine , randomized controlled trial , intervention (counseling) , internal validity , physical therapy , external validity , psychological intervention , treatment effect , selection bias , clinical psychology , psychology , psychiatry , surgery , social psychology , pathology , traditional medicine
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