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Personality Predictors of Drinking Outcomes in Depressed Alcohol-Dependent Patients
James A Foulds1, Roger T Mulder2, Giles Newton-Howes3
1Department of Psychological Medicine, University of Otago, Christchurch, New Zealand james.foulds@otago.ac.nz.
Aim:
To evaluate the role of personality dimensions as predictors of drinking outcomes in depressed alcohol-dependent patients.
Methods:
Temperament and character inventory (TCI) scores were obtained at baseline in a 24-week study of 127 depressed alcohol-dependent patients who received open-label naltrexone and were randomized to citalopram or placebo. The association between TCI personality dimensions and alcohol outcomes during follow-up was examined using general linear mixed models.
Results:
Low novelty seeking, high self-directedness and high cooperativeness predicted less alcohol consumption on drinking days during follow-up. Temperament and character variables had no effect on the percentage of days abstinent from alcohol. Depression mediated the effects of self-directedness and cooperativeness on alcohol outcomes while the effect of novelty seeking remained after adjusting for depression scores in follow-up.
Conclusion:
Identifying personality characteristics at baseline predicts drinking outcomes in depressed, alcohol-dependent patients. In particular patients with high novelty seeking drank more heavily on drinking days and they may therefore need more intensive intervention to achieve good treatment outcomes.
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