E-viri
PDF
Recenzirano
Odprti dostop
-
Higgins, Julian P T; Thompson, Simon G; Deeks, Jonathan J; Altman, Douglas G
BMJ, 09/2003, Letnik: 327, Številka: 7414Journal Article
An alternative quantification of heterogeneity in a meta-analysis is the among-study variance (often called tau^sup 2^), calculated as part of a random effects meta-analysis. This is more useful for comparisons of heterogeneity among subgroups, but values depend on the treatment effect scale. We believe, I^sup 2^ offers advantages over existing approaches to the assessment of heterogeneity (box).
