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Table 3 Heterogeneity and inconsistency in the diabetes example

From: A graphical tool for locating inconsistency in network meta-analyses

Q statistic

Number of studies

Degrees of freedom

p value

Q net

96.98

26

27-9=18

<0.001

Q inc

22.53

26

16-9=7

0.002

Q het

74.45

26

27-16=11

<0.001

Q plac:benf het

4.38

2

2-1=1

0.036

Q plac:metf het

42.16

3

3-1=2

<0.001

Q plac:migl het

6.45

3

3-1=2

0.040

Q plac:rosi het

21.27

6

6-1=5

0.001

Q metf:rosi het

0.19

2

2-1=1

0.665

  1. The decomposition of the Q statistics as well as the degrees of freedom of the corresponding chi-squared distributions and the p values are shown. In addition the considered number of studies are displayed. Only one study is observed for the following designs: plac:acar, plac:piog, plac:sita, plac:vild, acar:SUal, metf:piog, metf:SUal, piog:rosi, rosi:SUal, plac:acar:metf. For this reason, the corresponding Q d het statistics are not shown.