Effects of low-intensity Internet alcohol treatment on alcohol consumption in comparison with no-intervention controls, and subgroup analyses of associations between effect sizes and study characteristics (Hedges’s g).

Notes:bold – near significance; a-1 according to the random effects model; a-2: according to the mixed effects model bThe P-values in this column indicatewhether the Q-statistic is significant (I2-statistics do not include a test of significance).; cThe P-values in this column indicate whether the difference between the effect sizes in the subgroups is significant.; *P≤0.05; **P