RESUMO
BACKGROUND: A randomized controlled trial (RCT) of topical treatment combined with regular patient support provided by dermatological nurses in structured consultations of 20-min duration every fourth week improved psoriasis severity, quality of life and treatment adherence compared with topical treatment combined with standard patient support, which is seeing a dermatologist every third month. OBJECTIVES: To examine the economic impact of the patient support from a healthcare-sector perspective in the RCT. METHODS: Costs for primary care, secondary healthcare services and costs of prescription medication were compared for the intervention and nonintervention groups over 48 weeks. Health benefits were expressed in terms of quality-adjusted life-years (QALYs) measured by the EuroQoL five-dimension three-level questionnaire. Regression analyses were used to estimate incremental cost and QALYs. RESULTS: The incremental cost was estimated at £462, with an average increase of 0.08 QALYs per patients for participants receiving the intervention compared with those receiving standard care. The incremental cost-effectiveness ratio for patients was £5999/QALY. The intervention had an almost 100% probability of being cost-effective at a willingness-to-pay threshold of £30 000 per QALY. CONCLUSIONS: Addressing adherence issues is critical to improving outcomes for patients with psoriasis who use topical treatment. The personal support intervention was effective with an acceptable increase in costs.