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Table 2 Effect of increasing within trial precision (factor M) on heterogeneity measures (data in [14]).

From: Undue reliance on I 2 in assessing heterogeneity may mislead

Factor Measure
M τ ^ 2 MathType@MTEF@5@5@+=feaagaart1ev2aaatCvAUfKttLearuWrP9MDH5MBPbIqV92AaeXatLxBI9gBaebbnrfifHhDYfgasaacPC6xNi=xH8viVGI8Gi=hEeeu0xXdbba9frFj0xb9qqpG0dXdb9aspeI8k8fiI+fsY=rqGqVepae9pg0db9vqaiVgFr0xfr=xfr=xc9adbaqaaeGaciGaaiaabeqaaeqabiWaaaGcbaGafqiXdqNbaKaadaahaaWcbeqaaiabikdaYaaaaaa@2EC9@ Q (P-value) I 2 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]