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  • 1.
    Jonsson, Jakob
    et al.
    Stockholm University, Faculty of Social Sciences, Department of Psychology, Clinical psychology.
    Hodgins, David
    Munck, Ingrid
    Carlbring, Per
    Stockholm University, Faculty of Social Sciences, Department of Psychology, Clinical psychology.
    Reaching out to big losers: Brief motivational contact leads to sustained reductions in gambling over one yearIn: Article in journal (Refereed)
    Abstract [en]

    Background and aims: We previously demonstrated that phone and letter-based motivational interventions with high expenditure gamblers had significant short term positive effects on gambling and use of responsible gambling tools. This report examines outcomes over twelve months.

    Design: A randomized controlled trial design with three conditions: feedback intervention by telephone, letter, or a no-contact control condition.

    Setting: Customers of Norsk Tipping gambling platforms.

    Participants: 1,003 statistical triplets from the top .5% of customers based upon annual expenditure, matched on sex, age, and net losses.

    Measurements: Primary outcome measure was gambling theoretical loss, derived from the Norsk Tipping customer database. Secondary outcomes were responsible gambling customer actions and whether the participant was retained as a NT customer.

    Findings: The results showed a positive and sustained effect of the phone and letter interventions over 12 months - the telephone group showed a 30% reduction in theoretic loss (d =0.44) and the letter group 13% (d =0.18), both outperforming the control group with a 7% reduction (d =0.11). The phone condition was superior to both the letter and control conditions in per protocol (p<0.001) and intention to treat analyses (ITT) (p< 0.018 and 0.001). Individuals in the phone condition took more responsible gambling actions. The letter condition had better outcomes than the control in the ITT only (p<0.001). Over 99% in the intervention groups were still customers during the follow-up year.

    Conclusions: A targeted telephone intervention with high expenditure customers effectively reduced theoretical losses over a 12 month period. Gambling companies can utilize this type of intervention as a response to their duty to care for customers.

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