Baseline and after-treatment changes were compared between patients with PsA @ years versus PsA > @ years in efficacy measures ( physician global assessment -LSB- PGA -RSB- arthritis , swollen joint count and Psoriasis Area and Severity Index -LSB- PASI -RSB- ) and patient reported outcomes ( PROs ; joint pain , arthritis activity , Euro-Qol -LSB- EQ-@D -RSB- utility and visual analogue score -LSB- VAS -RSB- ) using linear regression analysis .