Social cognitive predictors of treatment outcome in cannabis dependence.
Drug Alcohol Depend
; 170: 74-81, 2017 Jan 01.
Article
em En
| MEDLINE
| ID: mdl-27883947
ABSTRACT
BACKGROUND:
Drug-related outcomes expectancies and refusal self-efficacy are core components of Social Cognitive Theory. Both predict treatment outcome in alcohol use disorders. Few studies have reported expectancies and refusal self-efficacy in cannabis dependence. None have examined both, although both constructs are key targets in Cognitive-Behavioural Therapy (CBT). This study tests the predictive role of expectancies and refusal self-efficacy in treatment outcome for cannabis dependence.DESIGN:
Outpatients completed a comprehensive assessment when commencing cannabis treatment and predictors of treatment outcome were tested.SETTING:
A university hospital alcohol and drug outpatient clinic.PARTICIPANTS:
221 cannabis-dependent patients participated in a 6-week CBT program where the goal was abstinence. MEASUREMENTS Cannabis Expectancy Questionnaire and Cannabis Refusal Self-Efficacy Questionnaire, cannabis dependence severity [Severity of Dependence Scale], psychological distress [General Health Questionnaire] at baseline; the timeline follow-back procedure at baseline and each session.FINDINGS:
Patients reporting lower confidence in their ability to resist cannabis during high negative affect (emotional relief refusal self-efficacy) had a lower likelihood of abstinence (p=0.004), more days of use (p<0.001), and larger amount used (p<0.001). Negative cannabis expectancies predicted greater likelihood of abstinence (p=0.024). Higher positive expectancies were associated with lower emotional relief self-efficacy, mediating its association with outcome (p<0.001).CONCLUSIONS:
Emotional relief refusal self-efficacy and negative expectancies are predictive of better treatment outcomes for cannabis dependence. Positive expectancies may indirectly predict poorer outcome because of a negative association with self-efficacy, but this conclusion remains tentative as directionality could not be established.Palavras-chave
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Base de dados:
MEDLINE
Métodos Terapêuticos e Terapias MTCI:
Plantas_medicinales
Assunto principal:
Estresse Psicológico
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Terapia Cognitivo-Comportamental
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Abuso de Maconha
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Autoeficácia
Tipo de estudo:
Diagnostic_studies
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Prognostic_studies
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Qualitative_research
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Risk_factors_studies
Idioma:
En
Revista:
Drug Alcohol Depend
Ano de publicação:
2017
Tipo de documento:
Article