We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleAppraising the evidence: what is measurement bias?AuthorsPage, Lisa A; Henderson, MaxPublicationEvidence-based mental health, 2008, Vol 11, Issue 2, p36ISSN1468-960XPublication typeJournal ArticleDOI10.1136/ebmh.11.2.36