Does Willingness to Pay differ for mental and physical health?

ABSTRACT

OBJECTIVES: The urban environment can have a significant impact on mental and physical health. Health impact appraisal of new developments should address these issues. However, transferable economic valuation evidence for urban planners in the UK is thin, especially around mental health, making it harder to estimate the cost-efficiency of public health interventions to address these conditions. A further complication is that mental health may be perceived differently from physical health. This study examines Willingness to Pay (WTP) to avoid depression and lower back pain. METHODS: WTP estimates were obtained by applying contingent valuation tasks in an online survey with a representative sample in the UK (n=1553). Interval regression models were used to estimate the effects of disease severity, payment frequency, and respondent characteristics on WTP. RESULTS: Respondents' WTP to avoid both conditions was relatively high (around 5-6% of stated income to return to current health state). Depression was rated as being twice as burdensome on quality of life than Pain, and bids to avoid Depression were 20-30% more than Pain. Analysis of motivation responses suggests mental health treatment is perceived as less easy to access and less effective than the equivalent for pain, and respondents expect a larger burden on their family and relationships as they try to manage their condition themselves. CONCLUSIONS: Results suggest that depression bids may be affected by uncertainty around access to effective treatment in the health care system. This has implications for how mental illness may be prioritised in resource allocation towards public health interventions.