Abstract
BackgroundInternet-based interventions can be a promising option for individuals with problem gambling facing barriers to seeking help. This study aimed to directly compare the effects of therapist-guided Internet interventions with unguided ones on gambling-related behavior, cognition, and stage of change including help-seeking intention. MethodsWe conducted a participant-blinded randomized controlled trial of therapist-guided versus unguided groups with a 12-week follow-up. Both groups received self-help chatbot-delivered cognitive behavioral therapy. Additionally, at baseline and weeks 1, 2, 3, and 4, the guided group received personalized feedback messages from therapists based on their gambling diary and questionnaire responses. The unguided group received reminders of assessments from research assistants. The primary outcome was the change in scores on the Gambling Symptoms Assessment Scale (G-SAS) over 12 weeks. Secondary outcomes included the stage of change including help-seeking intention, money wagered, gambling frequency, and gambling-related cognitions. ResultsWe included 139 participants with a mean Problem Gambling Severity Index total score of 14.6 and a mean G-SAS total score of 27.0 who sought information about gambling problems. Both groups demonstrated substantial decreases in their G-SAS scores from baseline to week 12 (-10.2, 95% CI: −7.67 to −12.7 for the guided group, and 11.7, 95% CI: −9.05 to −14.3 for the unguided group). However, we did not find a significant between-group difference (1.49, 95% CI: −2.20 to 5.17). Regarding the stage of change including help-seeking intention, there were also no between-group differences. ConclusionsMinimum therapist support did not have an additive effect on the self-help chatbot intervention on gambling symptoms, behavior, and the stage of change including help-seeking intention.
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