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Utility decrements associated with side effects in schizophrenia
Journal of Medical Economics
|September 12, 2014
Summary
Treatment side-effects significantly impact patient utility in schizophrenia. Extrapyramidal symptoms (EPS) caused the largest utility decrement, highlighting the need to manage side effects for improved patient well-being.
Area of Science:
- Psychiatry
- Health Economics
- Pharmacoeconomics
Background:
- Existing research on schizophrenia often focuses on disease stages, neglecting treatment side-effects.
- Quantifying the impact of side effects on patient utility is crucial for comprehensive care.
Purpose of the Study:
- To describe and quantify the impact of treatment-related side effects on utility in schizophrenia patients.
- To analyze the direct impact of specific antipsychotic side effects on patient-reported outcomes.
Main Methods:
- Utilized data from the European Schizophrenia Cohort (EuroSC), a 2-year observational study.
- Employed EQ-5D and Subjective Side Effect Rating Scale to assess utility and patient distress from side effects (EPS, weight gain, sedation, sexual dysfunction).
- Performed bivariate and random effects regression analyses to determine utility decrements associated with each side effect.
Main Results:
- 1208 schizophrenia patients were analyzed; EPS was the most prevalent side effect (approx. 60%).
- Patients reporting no side effects had higher utility (EQ-5D index 0.81) compared to those with side effects.
- Utility decrements were observed for EPS (-0.042), weight gain (-0.022), sexual dysfunction (-0.022), and sedation (-0.019).
Conclusions:
- Treatment side effects, particularly extrapyramidal symptoms (EPS), have a significant direct impact on patient utility in schizophrenia.
- Findings underscore the importance of managing antipsychotic side effects to improve patient quality of life and utility.
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