Effect of alcohol use on the course of bipolar disorder: one-year follow-up study using the daily prospective Life Chart method
Article first published online: 27 MAR 2014
© 2014 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd
Volume 16, Issue 4, pages 400–409, June 2014
How to Cite
Effect of alcohol use on the course of bipolar disorder: one-year follow-up study using the daily prospective Life Chart Method. Bipolar Disord 2014: 16: 400–409. © 2014 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd., , , , , .
- Issue published online: 5 JUN 2014
- Article first published online: 27 MAR 2014
- Manuscript Accepted: 16 OCT 2013
- Manuscript Received: 17 OCT 2012
- Geestelijke Gezondheidszorg InGeest (GGZ) Institute of Psychiatry and Mental Health
- Altrecht GGZ
- Stichting tot Steun (VCVGZ)
- Eli Lilly International
- Bristol-Myers Squibb
- Besloten Vennootschap (BV)
- alcohol use;
- bipolar disorder;
- Daily Prospective Life Chart Method;
- multi-state models
Relatively little is known about the temporal relationship between alcohol use and subsequent mood changes in patients with bipolar disorder, and the available findings are inconsistent. The present study was a fine-grained analysis of the temporal relationship between alcohol use and short-term mood-switching probabilities.
The study included 137 patients with bipolar disorder who performed daily self-ratings of their mood symptoms and the number of alcohol units consumed for a period of up to 52 weeks by using the National Institute of Mental Health self-rated prospective Life Chart Method. At baseline, the Structured Clinical Interview for DSM-IV was administered and demographic, social, and clinical characteristics were obtained. Multi-state models were used to assess the impact of the number of alcoholic drinks on patients' transition through different states of mood (depression, euthymia, and mania).
The effect of alcohol use on the change in mood states was limited. For women in a depressive state, higher alcohol use was associated with a shorter time before entering the euthymic state [hazard ratio (HR) = 1.18, 95% confidence interval (CI): 1.03–1.36, p < 0.05], whereas, for men in an euthymic state, higher alcohol use was associated with a longer time before entering a manic state (HR = 0.81, 95% CI: 0.71–0.92, p < 0.05). The correlation between the consumed number of drinks per week and the average mood severity score of the following week was −0.01 (p < 0.001), indicating that only 0.01% of the variance in mood severity in this population is explained by alcohol use. Possible explanations for these findings are discussed.
The current study, using a fine-grained analysis, suggests that alcohol use does not have a direct effect on the course of bipolar disorder in patients using mood stabilizers.