Table 1

Variables included in principal component analysis at first and second visit

First visitSecond visit
VAS PtGA (mm)36.7 (25)34.3 (23.9)
VAS PAIN (mm)35.4 (25)30.2 (23.3)*
BASDAI3.8 (2.3)3.7 (2.3)
SF-36 MCS60.4 (25.1)63.4 (23.7)
HAQ0.6 (0.6)0.6 (0.6)
66 SJC2.7 (4.1)2.2 (4.2)
68 TJC5.2 (7.4)6.3 (12)
Enthesitis score0.7 (1.7)0.4 (1.3)
CRP (mg/dl)1.4 (3.1)0.9 (1.8)
ESR (mm)14.7 (17.3)15.6 (19.5)
PASI3.3 (6.1)3.1 (6.1)
  • The variables represent the domains proposed by the OMERACT-7 PsA module. Mean values (±SD) are shown.

  • * p=0.002 for difference between first and second visit; differences otherwise not significant.

  • BASDAI, Bath Ankylosing Spondylitis Disease Activity Index; CRP, C-reactive protein; ESR, erythrocyte sedimentation rate; HAQ, health assessment questionnaire; PASI, psoriasis area and severity index; SF-36 MCS, Short Form-36 health survey Mental Component Summary; SJC, swollen joint count; TJC, tender joint count; VAS PAIN, visual analogue scale patient pain assessment; VAS PtGA, visual analogue scale patient global disease activity assessment.