Abstract

GALLINO YANZI, J et al. Factors influencing the differences between global assessment of disease activity by patient and physician in patients with psoriatic arthritis. Rev. argent. reumatolg. [online]. 2016, vol.27, n.3, pp.10-14. ISSN 0327-4411.

Objective: To evaluate the agreement and the variables that influence global disease assessment by the patient (PGA) and physician (PhGA) in patients with PsA. Methods: Patients with PsA were included. We calculated DAS28, DAPSA, CPDAI and MDA. Morning stiffness, pain and global disease assessment by patients and physicians were assessed using visual analogue scale (VAS 0-10 cm). Patients completed BASDAI, HAQ-A, BASFI, ASQoL and PsAQoL. Results: 110 patients were included. The PGA had very good correlation with pain (Rho=0.76), BASFI (Rho=0.7) and BASDAI (Rho=0.7). By contrast, the PhGA had a good correlation with pain (Rho=0.65), BASDAI (Rho=0.62) and PGA (Rho=0.64). In two multiple linear regression analysis, using PhGA and PGA as dependent variables, pain was the main variable that was significantly associated with both of them (βcoeff: 0.529, p<0.001 and βcoeff: 0.481, p=0.002, respectively). Taking Minimal Disease Activity (MDA), we performed a logistic regression analysis, considering MDA as a dependent variable. PGA had a greater association as compared to the PhGA [OR: 0.61 (95% CI: 0.42-0.89), p=0.01 vs 0.49 (95% CI: 0.29-0.87), p= 0.02]. Conclusion: Both assessments showed good correlation. Pain was the variable most strongly influencing both. PGA had a stronger association with MDA compared to PhGA.

Keywords : psoriatic arthritis; physician disease activity; patient disease activity.