Real world insights for psoriasis: the association of severity of skin lesions with work productivity, medical consumption costs and quality of life

Abstract

Background Psoriasis is a prevalent, chronic skin disease with a potential impact on work productivity, medical consumption costs, and quality of life. The influence of the extent of skin lesions on these outcomes is not well known. Objective We determined associations of self-reported skin lesions with self-reported work productivity, medical consumption costs, and health-related quality of life in respondents with psoriasis. Methods In this cross-sectional study, we included respondents with self-reported psoriasis in the Netherlands in an online questionnaire. We assessed the self-reported percentage body surface area (BSA) of psoriasis lesions. We used validated instruments to assess work productivity (WPAI-PsO), medical consumption costs (iMCQ), and health-related quality of life (EQ-5D-5L and the DLQI). We used ordinal logistic regression to associate BSA categories >1% versus 0-1% with outcomes adjusted for multiple confounders. Results We included 501 respondents with a mean age of 43 ± 12 years; 64% were men. Median BSA was 2% (interquartile range 1–5%). A higher BSA was associated with higher overall work impairment due to psoriasis (common odds ratio [cOR] 2.44, 95% confidence interval [CI] 1.40–4.29; n = 205), higher medical consumption costs (cOR 2.06, 95% CI 1.45–2.94) and lower health-related quality of life. Associations were strongest with a BSA cutoff of 0% or 1% compared to 2% or higher categories. Discussion In our study, having few to no lesions in psoriasis was associated with lower overall work impairment due to psoriasis, lower medical consumption costs, and higher health-related quality of life.