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729525 
Journal Article 
Review 
Measuring inconsistency in meta-analyses 
Higgins, JP; Thompson, SG; Deeks, JJ; Altman, DG 
2003 
Yes 
British Medical Journal (International Edition)
ISSN: 0959-8146
EISSN: 0959-535X 
327 
7414 
557-560 
English 
12958120 
Cochrane Reviews have recently started including the quantity I 2 to help readers assess the consistency of the results of studies in meta-analyses. What does this new quantity mean, and why is assessment of heterogeneity so important to clinical practice?