Leung YY, Orbai AM, de Wit M, et al. - Researchers conducted the study for analyzing the psychometric properties of three patient-reported outcomes (PROMs) to evaluate the physical function in psoriatic arthritis (PsA). Information accessible for Health Assessment Questionnaire-disability index (HAQ-DI), Physical component summary score of SF-12 (PCS12) and functional capacity of Psoriatic Arthritic Impact of Disease Instrument (PsAID-FC) from a longitudinal study in 14 countries of consecutive adults with definite PsA with ≥ 2 years of duration. Four hundred fourteen subjects were analyzed at baseline. In 31% and 21% of patients for HAQ-DI and PsAID-FC, ceiling effects were recorded. Floor effects were slight. The authors concluded that HAQ-DI, PCS12, and PsAID-FC serve as appropriate functional indicators for PsA. PsAID-FC, a single query, performed similarly to the other PROMs and maybe another choice for measuring PsA-specific physical function.