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Table 1 Percentage agreement for the results of a trial to be predicted by the meta-analysed results of the remaining studies in the Cochrane reviews

From: Which is more generalizable, powerful and interpretable in meta-analyses, mean difference or standardized mean difference?

Ā Ā 

Random-effects model

Fixed-effect model

No. of reviews

MD

SMD

P-value, sign test

MD

SMD

P-value, sign test

All reviews

1068

44.5%

46.7%

<0.0001

27.8%

31.9%

<0.0001

I-squared of both MD and SMD <60%

560

50.0%

52.9%

0.0004

44.0%

47.9%

<0.0001

I-squared of both MD and SMD <30%

357

55.3%

59.8%

<0.0001

53.0%

57.8%

<0.0001

  1. The average percentages are weighted by the number of included RCTs.