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Table 3 Between-group effect sizes of secondary outcomes

From: Health economic evaluation of an internet intervention for depression (deprexis), a randomized controlled trial

  Post-assessment 3-monts follow-up 9-monts follow-up
Cohen's d 95% - CI Cohen's d 95% - CI Cohen's d 95% - CI
PHQ-9 0.37 0.29 - 0.44 0.23 0.15 - 0.31 0.15 0.07 - 0.23
SF-12 physical summary scale 0.18 0.10 - 0.25 0.09 0.01 - 0.17 0.14 0.05 - 0.22
SF-12 mental summary scale 0.33 0.25 - 0.40 0.22 0.15 - 0.30 0.09 0.01 - 0.18
EQ-5D-3L 0.14 0.07 - 0.22 0.10 0.02 - 0.17 0.09 0.01 - 0.18
WSAS 0.23 0.15 - 0.31 0.15 0.07 - 0.23 0.120.12 0.02 - 0.24
  1. Cohen's d was calculated as the difference between the mean of the intervention and control group, divided by the pooled standard deviation of both groups. The effect sizes are defined as small (d = 0.2), medium (d = 0.5) and large (d = 0.8)
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