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Review
. 2013 Dec;31(12):1131-54.
doi: 10.1007/s40273-013-0107-9.

The estimation of utility weights in cost-utility analysis for mental disorders: a systematic review

Michael Sonntag  1 , Hans-Helmut König, Alexander Konnopka
Affiliations
Review

The estimation of utility weights in cost-utility analysis for mental disorders: a systematic review

Michael Sonntag et al. Pharmacoeconomics. 2013 Dec.

Abstract

Objective: To systematically review approaches and instruments used to derive utility weights in cost-utility analyses (CUAs) within the field of mental disorders and to identify factors that may have influenced the choice of the approach.

Methods: We searched the databases DARE (Database of Abstracts of Reviews of Effects), NHS EED (National Health Service Economic Evaluation Database), HTA (Health Technology Assessment), and PubMed for CUAs. Studies were included if they were full economic evaluations and reported quality-adjusted life-years as the health outcome. Study characteristics and instruments used to estimate utility weights were described and a logistic regression analysis was conducted to identify factors associated with the choice of either the direct (e.g. standard gamble) or the preference-based measure (PBM) approach (e.g. EQ-5D).

Results: We identified 227 CUAs with a maximum in 2009, 2010, and 2012. Most CUAs were conducted in depression, dementia, or psychosis, and came from the US or the UK, with the EQ-5D being the most frequently used instrument. The application of the direct approach was significantly associated with depression, psychosis, and model-based studies. The PBM approach was more likely to be used in recent studies, dementia, Europe, and empirical studies. Utility weights used in model-based studies were derived from only a small number of studies.

Limitations: We only searched four databases and did not evaluate the quality of the included studies.

Conclusions: Direct instruments and PBMs are used to elicit utility weights in CUAs with different frequencies regarding study type, mental disorder, and country.

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