Depression-Free Day to Utility-Weighted Score

Is it Valid

Datos Bibliográficos

ID9101426
AutoresJeffrey M Pyne (0000-0001-9501-6053, University of Arkansas for Medical Sciences, autor de correspondencia), Shanti P Tripathi (0009-0008-9680-6442, University of Arkansas for Medical Sciences), Shanti Tripathi, David Williams (0000-0001-8976-5760, University of Arkansas for Medical Sciences), D Keith Williams, John C Fortney (0000-0001-9409-8894, University of Arkansas for Medical Sciences, autor de correspondencia), John Fortney
Año2007
Volumen45
Número4
Páginas357-362
Fecha de publicación2007-04-01
Peer ReviewedSí
Open AccessNo
TipoARTICLE
RevistaMedical Care (JOURNAL)
Identificadores de la revistaISSN: 0025-7079 • E-ISSN: 1537-1948
EditorialOvid Technologies (Wolters Kluwer Health) (PUBLISHER)
DOI10.1097/01.mlr.0000256971.81184.aa
PMID17496720
OpenAlexW2057808881
IdiomaEN
Citas recibidas2
Referencias citadas32

BACKGROUND: Cost-utility analyses using formulas to convert depression-free days (DFDs) to utility-weighted scores are increasingly common. These formulas are based on linear extrapolation of data documenting the correlation between depression symptom severity and generic health-related quality of life. OBJECTIVE: We sought to examine the validity of formulas converting DFDs to utility weights. METHODS: We undertook an observational study with data collection at baseline, 1 week and 1, 3, 6, 9, and 12 months on 77 subjects (42 inpatient, 35 outpatient) diagnosed with current major depression. Subjects were divided into treatment response categories based on changes in depression severity. Depression severity measures used were the Hamilton Rating Scale for Depression (HAM-17) and Beck Depression Inventory (BDI) and the health-related quality of life measure was the self-administered Quality of Well-Being scale (QWB-SA). DFD calculations were based on depression severity scores and converted to utility weights using available formulas. Utility-weighted data collected over the course of 1 year were used to estimate quality-adjusted life years (QALYs). RESULTS: QALYs estimated from the QWB-SA were significantly lower than those based on utility-weighted DFD calculations but the incremental QALYs were not significantly different. Using a slightly lower utility-weighted conversion factor for the BDI or a larger BDI severity range to calculate DFDs resulted in a better fit compared with the QWB-SA. CONCLUSIONS: Our results support the validity of the existing HAM-17 utility-weighted formula and suggest modifications for the BDI formula. If generic health-related quality of life measures are not available for conducting cost-utility analyses of depression interventions then the existing HAM-17 and modified BDI formulas appear to be reasonable alternatives

Beck Depression Inventory · Cost effectiveness · Cost–utility analysis · Depression (economics) · Disease · EQ-5D · Health related quality of life · Observational study · Physical therapy · Psychiatry · Quality of life (healthcare) · Quality-adjusted life year · Rating scale · Statistics · Health Systems, Economic Evaluations, Quality of Life · Internal Medicine · Mathematics · Medicine · Mental Health Treatment and Access · Treatment of Major Depression