Brief interventions have become increasingly valuable in the management of individuals with alcohol-related problems. The availability and uptake of these brief interventions is however limited.
This so-called treatment gap may be narrowed through accessible, effective, and inexpensive treatment programmes. E-mental health interventions would be one promising approach for developing such treatment options, if they are shown to be effective.
In this dissertation, the (cost-)effectiveness of two interventions based on cognitive behavioural therapy is subjected to research in three consecutive studies. The two interventions are a non-therapist involved Internet-based self-help programme, and a therapist led Internet therapy, based on textual-chat interaction.
The aim of this dissertation is twofold. First, there is a clinical aim: to identify effective and cost-effective e-mental health interventions for harmful alcohol use. Second, there is a methodological aim: to address methodological challenges in the design, execution, and analysis of e-mental health randomized controlled trials.
In the coming years, it is expected that the development and dissemination of e-mental health interventions will advance. This dissertation hopes to contribute valuably to the current knowledge base, upon which future research and interventions will build.
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