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Originalarbeit

Effekte einer einmaligen Chat-Intervention auf problematischen Substanzkonsum

Published Online:https://doi.org/10.1024/0939-5911.a000182

Ziel: Überprüfung der Effektivität einer auf Motivational Interviewing (MI) basierenden Intervention im Online-Chat unter jungen Alkohol- und Cannabiskonsumenten mit ambivalenter Änderungsmotivation. Methodik: Randomisiert-kontrollierte Online-Studie mit Nachbefragungen nach einem und nach drei Monaten. Die Rekrutierung erfolgte über die Selbsttests auf der Website drugcom.de und schloss nur Personen mit problematischem Alkohol- oder Cannabiskonsum ein. Teilnehmer der Interventionsgruppe nahmen am privaten MI-Chat teil. Mitglieder der Kontrollgruppe erhielten im Chat lediglich Sachinformationen über den zuvor genutzten Selbsttest. Ergebnisse: 302 Personen wurden randomisiert und in die ITT-Auswertung einbezogen. Es zeigten sich keine Gruppenunterschiede im Konsum von Alkohol (p ≥ 0.224), Cannabis (p = 0.537) oder in der Änderungsmotivation nach RCQ (p = 0.469). Beide Gruppen senkten ihren Alkoholkonsum im Studienverlauf signifikant und zeigten Verbesserungen der Änderungsbereitschaft. Schlussfolgerungen: Die beschriebene Chat-Intervention erzielt keine Verhaltensänderung bei ambivalent eingestellten Konsumenten. Online-Interventionen für diese Zielgruppe sollten womöglich länger und verbindlicher gestaltet werden.


Efficacy of a Single-Session Online-Intervention on Problematic Substance Use

Aims: To evaluate a one-session online-intervention based on Motivational Interviewing (MI) among young alcohol and cannabis users who are ambivalent about behavior change. Methods: Randomized controlled online trial (RCT) with follow up surveys after one and three months. Participants were recruited via self-tests on the addiction prevention website www.drugcom.de. Recruitment only included individuals with problematic alcohol or cannabis use. Participants either received a MI-based intervention (intervention group) or technical information (control group) in a private online chat. Results: 302 individuals were randomized and included in the intent-to-treat-analysis. The follow up data revealed no group differences in the use-related measures of alcohol (p ≥ 0.224), cannabis (p = 0.537) or the readiness to change according to RCQ (p = 0.469). In both groups, there was a significant time-effect in alcohol use and the readiness to change. Conclusions: A one-session text based online-intervention possibly is not effective in motivating young substance abusers who are ambivalent about change. Online-interventions aiming at this group should be longer and more binding.

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