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Assessing risk of bias in prevalence studies: modification of an existing tool and evidence of interrater agreement.

Abstract：

OBJECTIVE:In the course of performing systematic reviews on the prevalence of low back and neck pain, we required a tool to assess the risk of study bias. Our objectives were to (1) modify an existing checklist and (2) test the final tool for interrater agreement. STUDY DESIGN AND SETTING:The final tool consists of 10 items addressing four domains of bias plus a summary risk of bias assessment. Two researchers tested the interrater agreement of the tool by independently assessing 54 randomly selected studies. Interrater agreement overall and for each individual item was assessed using the proportion of agreement and Kappa statistic. RESULTS:Raters found the tool easy to use, and there was high interrater agreement: overall agreement was 91% and the Kappa statistic was 0.82 (95% confidence interval: 0.76, 0.86). Agreement was almost perfect for the individual items on the tool and moderate for the summary assessment. CONCLUSION:We have addressed a research gap by modifying and testing a tool to assess risk of study bias. Further research may be useful for assessing the applicability of the tool across different conditions.

journal_name

J Clin Epidemiol

journal_title

Journal of clinical epidemiology

authors

Hoy D,Brooks P,Woolf A,Blyth F,March L,Bain C,Baker P,Smith E,Buchbinder R

doi

10.1016/j.jclinepi.2011.11.014

subject

Has Abstract

pub_date

2012-09-01 00:00:00

pages

934-9

issue

9

eissn

0895-4356

issn

1878-5921

pii

S0895-4356(12)00079-0

journal_volume

65

pub_type

杂志文章

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