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Table 2 “Statistically significant” findings for treatment effect in Cochrane reviews only when I 2 of both MD and SMD were less than 30%

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

  Random-effects model Fixed-effect model
  N (%) N (%)
Both significant 164 (45.9) 168 (47.1)
MD significant but SMD non-significant 8 (2.2) 8 (2.2)
MD non-significant but SMD significant 11 (3.1) 9 (2.5)
Both non-significant 174 (48.7) 172 (48.2)
  1. P = 0.647 in random-effects model and P = 1.000 in fixed-effect model, according to the McNemar test.