Treatment Mode Preferences in Psoriatic Arthritis: A Qualitative Multi-Country Study

Objective Qualitative research exploring patient preferences regarding the mode of treatment administration for psoriatic arthritis (PsA) is limited. We report patient preferences and their reasons across PsA treatment modes. Methods In this global, cross-sectional, qualitative study, interviews were conducted with adult patients with PsA in Brazil, France, Germany, Italy, Spain, the UK, and the US. Patients were currently taking a disease-modifying antirheumatic drug (DMARD). Patients indicated the order and strength of preference (0-100; 100 = strongest) across four modes of treatment administration: oral (once daily), self-injection (weekly), clinic injection (weekly), and infusion (monthly); reasons for preferences were qualitatively assessed. Descriptive statistics were reported. Fisher's exact tests and t-tests were conducted for treatment mode outcomes. Results Overall, 85 patients were interviewed (female, 60.0%; mean age, 49.8 years). First-choice ranking (%) and mean [standard deviation] preference points were: oral (49.4%; 43.9 [31.9]); self-injection (34.1%; 32.4 [24.8]); infusion (15.3%; 14.5 [20.0]); clinic injection (1.2%; 9.2 [10.0]). Of 48 (56.5%) patients with a strong first-choice preference (ie point allocation ≥60), 66.7% chose oral administration. Self-injection was most often selected as second choice (51.8%), clinic injection as third (49.4%), and infusion as fourth (47.1%). Oral administration was the first-choice preference in the US (88.0% vs 38.0% in Europe). The most commonly reported reason for oral administration as the first choice was speed and ease of administration (76.2%); for self-injection, this was convenience (75.9%). The most commonly reported reason for avoiding oral administration was concern about possible drug interactions (63.6%); for self-injection, this was a dislike of needles or the injection process (66.7%). Conclusion Patients with PsA preferred oral treatment administration, followed by self-injection; convenience factors were common reasons for these preferences. Overall, 43.5% of patients did not feel strongly about their first-choice preference and may benefit from discussions with healthcare professionals about PsA treatment administration options.