Estimating an anchored utility tariff for the well-being of older people measure (WOOP) for the Netherlands

Highlights

• A choice experiment was used to create weights for a novel well-being measure.

• This enables the use of the WOOP instrument in economic evaluations of elderly care.

• Health, independence, and financial stability were the most important dimensions.

• Social contact, receiving support, or feeling useful were less important.

• Study adopted methodological advances in utility measurement and choice task design.

Abstract

Objective

Health economic evaluations using common health-related quality of life measures may fall short in adequately incorporating all relevant benefits of health and social care interventions targeted at older people. The Well-being of Older People measure (WOOP) is a broader well-being measure that comprises nine well-being domains. The objective of this study was to estimate a utility tariff for the WOOP, to facilitate its application in cost-utility analyses.

Methods

A discrete choice experiment (DCE) with duration approach was set up and fielded among 2,012 individuals from the Netherlands aged 65 years and above. Matched pairwise choice tasks, colour-coding and level overlap were used to reduce the cognitive burden of the DCE. The choice tasks were created using a Bayesian heterogeneous D-efficient design. The estimation procedure accommodated for nonlinear time preferences via an exponential discounting function.

Results

The estimation results showed that ‘physical health’, ‘mental health’, and ‘making ends meet’ were the most important well-being domains for older people, followed by ‘independence’ and ‘living situation’. Of somewhat lesser importance were domains like ‘social life’, ‘receiving support’ and ‘feeling useful’. The generated utility tariffs can be used to translate well-being states described with the WOOP to a utility score between −0.616 and 1.

Conclusions

This study established a tariff for the WOOP, which will facilitate its use in economic evaluations of health and social care interventions targeted at older people, first of all in the Netherlands.