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 <i>g</i>).

<p><i>Notes:</i><b>bold</b> – 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<0.01; ***P≤0.001; AUDIT: Alcohol Use Disorders Identification Test; CBT cognitive-behavioural therapy; CI = confidence interval; CO completers-only analysis; DSM = Diagnostic Statistical Manual of Mental Disorders; FAST: Fast Alcohol Screening Test; ITT intention-to-treat analysis; MI motivational interviewing; n comp = number of comparisons; NNT = number needed to treat; PNF personalised normative feedback.</p

Results of meta-analysis: forest plot.

<p>Results of meta-analysis: forest plot.</p

Study inclusion meta-analysis: flow chart.

<p>Study inclusion meta-analysis: flow chart.</p