Discordance between patient and physician global assessments of psoriatic arthritis activity: an observational study...

Discordance between physicians and patients in assessing psoriatic arthritis (PsA) activity is common and might impact treatment adherence and decision-making. Cultural and belief systems may influence this discordance. This study aimed to assess the extent of patient-physician discordance in PsA in Arab countries and its association with demographic and disease characteristics.The TACTIC study was a cross-sectional observational study across 13 Arab countries in 2022. Patient and physician global assessments (PGA, PhGA) of disease activity (0-10 scale) were collected, along with demographic and disease data, Disease Activity in Psoriatic Arthritis (DAPSA), and Psoriatic Arthritis Impact of Disease (PsAID). Discordance was defined as an absolute difference of |PGA-PhGA|> 2. Its association with patient characteristics was analyzed through multivariable multinomial logistic regression. In 538 patients (317 females, 58.9%), with a mean age of 45.5 ± 13.2 years and PsA duration of 8.8 ± 7.3 years, the disease was moderately active (mean DAPSA 19.3 ± 16.1; mean PsAID 3.86 ± 2.33). Mean PGA was higher than mean PhGA (4.7 ± 2.5 versus 4.0 ± 2.4, p < 0.001) with an absolute difference of 1.30 ± 1.41 and a high correlation between global assessments (r = 0.74). Discordance was infrequent, occurring in 84 patients (15.6%), and was mostly due to higher PGA (70/84, 83.3%). Discordance (one-point increase) was associated with a lower PhGA (Odds ratio (OR) 3.03 [95%CI 2.18-4.22]), positive fibromyalgia screening (OR 1.28 [95%CI 1.03-1.58]), higher DAPSA (OR 1.16 [95%CI 1.03-1.09]), and higher PsAID scores (OR 2.63 [95%CI 1.96-3.54]). Discordance was primarily identified in patients with moderate disease activity. Discordance between PGA and PhGA was infrequent in Arab countries, suggesting strong patient-physician alignment. Expectations and disease perceptions may play a role in this discordance.