Table 2

Effect of increasing within trial precision (factor M) on heterogeneity measures (data in [14]).

Factor

Measure


M

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Q (P-value)

I2

H


1

0.018

85 (0.0953)

18.6% [0%; 40.1%]

1.11 [1; 1.29]

4

0.008

98 (0.0135)

29.2% [4.5%; 47.6%]

1.19 [1.02; 1.38]

16

0.027

454 (<0.0001)

84.8% [81.4%; 87.5%]

2.56 [2.32; 2.83]

64

0.028

1708 (<0.0001)

96.0% [95.4%; 96.5%]

4.98 [4.65; 5.32]


Rücker et al. BMC Medical Research Methodology 2008 8:79   doi:10.1186/1471-2288-8-79

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