Effect sizes for medication, cognitive behaviour therapy (CBT), and combined treatment

OutcomeNumber of studies with no heterogeneityOverall weighted effect size (95% CI)
Medication trials
Binge frequency90.66 (0.52 to 0.81)
Purge frequency60.39 (0.24 to 0.54)
Depression90.73 (0.58 to 0.88)
Eating attitudes80.71 (0.56 to 0.86)
CBT trials
Binge frequency171.28 (1.09 to 1.47)
Purge frequency241.22 (1.06 to 1.39)
Depression191.31 (1.10 to 1.51)
Eating attitudes131.35 (1.12 to 1.58)
Combined treatment
Binge frequency41.77 (1.34 to 2.21)
Purge frequency51.33 (0.94 to 1.73)