Brief Interventions in Primary Care: an Evidence Overview of Practitioner and Digital Intervention Programmes.

Nevertheless, a subgroup analysis investigating between-group differences where controls received alcohol-related information versus those where controls received no alcohol content showed a trend towards a larger effect estimate from trials in the latter group, (−13 g per week (95% confidence interval −23 to −3) versus −24 g per week (95% confidence interval −36 to −12)) [ 26 ••].

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