Discordance Between Physician- and Patient-Reported Disease Severity in Adults with Atopic Dermatitis: A US Cross-Sectional Survey

BACKGROUND: There is limited understanding of severity rating of atopic dermatitis in clinical practice. OBJECTIVES: To evaluate the agreement between physician- and patient-rated severity of atopic dermatitis. METHODS: Data were collected from the 2014 Adelphi US Atopic Dermatitis Disease Specific Programme, a cross-sectional survey of physicians and their patients with a history of moderate-to-severe atopic dermatitis; patients voluntarily completed a questionnaire. Current disease severity (mild/moderate/severe), based on personal judgment, was rated independently by patients and their physicians. The weighted kappa statistic identified level of agreement between physicians and patients. Bivariate analyses characterized agreement; multi-nomial logistic regression identified factors associated with discordance. RESULTS: Overall, 678 patients were included (369 [54.4%] were women, 525 [77.4%] were White, mean age was 39.3 years). Agreement was moderate (weighted kappa = 0.52): compared with physician ratings, patient-rated severity was higher in 76 patients (11.2%), lower in 137 patients (20.2%), and matched in 465 patients (68.6%). There were no differences in the rates of agreement between physician and patient ratings based on physician specialty (p = 0.6781), objective severity measures [Eczema Area and Severity Index score (p = 0.5308), percent body surface area affected (p = 0.9872), and current systemic immunosuppressant use (p = 0.9197)]. Multivariate analysis showed patients with a worse quality of life (Dermatology Life Quality Index) were more likely to rate a higher severity (relative risk ratio 1.04, 95% confidence interval 1.00–1.08; p = 0.0460). Physicians were more likely to rate a higher severity with a greater physician-reported sleep disturbance (relative risk ratio 1.71, 95% confidence interval 1.01–2.89; p = 0.0440). CONCLUSIONS: Almost one-third of patients rated atopic dermatitis severity differently from their physicians, supporting the importance of the patient perspective in the severity assessment of atopic dermatitis and the need for greater communication between patients and physicians. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (doi:10.1007/s40257-017-0284-y) contains supplementary material, which is available to authorized users.