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Table 4 Standardised effect sizes of trials

From: A study of target effect sizes in randomised controlled trials published in the Health Technology Assessment journal

Effect size Median (25th, 75th percentiles) Minimum Maximum
Overall
 Standardised target 0.300 0.198, 0.377 0.051 0.760
 Standardised observed 0.112 0.048, 0.287 < 0.001 1.184
p < 0.05
 Standardised target 0.309 0.229, 0.433 0.051 0.643
 Standardised observed 0.343 0.230, 0.501 < 0.001 1.184
p > 0.05
 Standardised target 0.297 0.183, 0.362 0.070 0.760
 Standardised observed 0.061 0.019, 0.155 < 0.001 0.716