Web-based self-help for problem drinkers: pragmatic randomised trial.
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0.001; standardized mean difference 0.40). Conclusions To our knowledge this is one of the first randomized controlled trials on aweb-based self-help intervention without therapist guidance for self-referred problem drinkers among the adult general population. The intervention showed itself to be effective in reducing problem drinking in the community. Keywords General population, internet, pragmatic randomized controlled trial, problem drinking, self-help.