Abstract | PURPOSE: METHODS: Administrative claims data from 2000 through 2006 were obtained from commercial insurance plans. Patients age 18-64 years who were discharged from a hospital with a diagnosis of bipolar disorder and given a prescription for an antipsychotic 0-14 days after discharge comprised the study sample. Adherence to antipsychotic medication was determined by measuring the number of unique days during which medication was supplied during the treatment period, a calculation known as the medication possession ratio (MPR). Rehospitalization was considered to be an indicator of relapse. A multivariate, stepwise logistic regression, which controlled for patient characteristics, type of bipolar disorder, general health status, and comorbid conditions, was used to assess the relationship between medication non-adherence and rehospitalization. RESULTS: A total of 1973 individuals were included in the analyses. The mean +/- S.D. MPR for this patient population was 0.46 +/- 0.32. Patients whose MPR was 0.75 or greater had a lower risk of all-cause rehospitalization (odds ratio [OR], 0.730; 95% confidence interval [CI], 0.580-0.919) and a lower risk of a mental-health-related rehospitalization (OR, 0.759; 95% CI, 0.603-0.955). As medication adherence increased above the MPR of 0.75, the risk of rehospitalization significantly decreased. CONCLUSION:
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Authors | Mariam Hassan, Maureen J Lage |
Journal | American journal of health-system pharmacy : AJHP : official journal of the American Society of Health-System Pharmacists
(Am J Health Syst Pharm)
Vol. 66
Issue 4
Pg. 358-65
(Feb 15 2009)
ISSN: 1535-2900 [Electronic] England |
PMID | 19202045
(Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
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Chemical References |
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Topics |
- Adult
- Antipsychotic Agents
(therapeutic use)
- Bipolar Disorder
(drug therapy)
- Female
- Health Care Costs
- Hospitalization
(economics)
- Humans
- Male
- Medication Adherence
- Middle Aged
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