Table 4

Heterogeneity and inconsistency in the antidepressants example
Q statistic Number of studies Degrees of freedom p value
Qnet 119.6 111 113-11=102 0.113
Qinc 36.9 111 44-11=33 0.293
Qhet 82.7 111 113-44=69 0.125

The Q statistic for the whole network, for inconsistency and for heterogeneity within designs are shown. In addition, the number of studies on which they are based, the degrees of freedom of the corresponding chi-squared distributions and the corresponding p values are displayed.

Krahn et al.

Krahn et al. BMC Medical Research Methodology 2013 13:35   doi:10.1186/1471-2288-13-35

Open Data