Skip to main content
. 2012 Jul 12;6:201–206. doi: 10.2147/BTT.S31145

Table 1.

Baseline demographic, clinical characteristics, and treatment of 76 case patients and 55 controls observed over a 3-year period

Psoriatic arthritis Rheumatoid arthritis P value
Patient N 76 55 NS
Females (N/%) 35 (46%) 40 (73%) 0.004
Males (N/%) 41 (54%) 15 (27%)
Age (years) 46 ± 10.2 50 ± 11.6 NS
Disease duration (months) 12 ± 8.3 16 ± 9.6 NS
Rheumatoid factor positive (N/%) 0 48 (89%)
Psoriatic arthritis pattern
Peripheral 45 (59%)
Axial 7 (9%)
Mixed 24 (31.5%)
Fatigue (VAS 0–100 mm) 58 ± 14.3 62 ± 14.9 NS
Pain (VAS 1–100) 66 ± 13.4 69 ± 10.8 NS
Articular morning stiffness (minutes) 120 ± 46.2 132 ± 55.3 NS
Tender joint count (N) 11 ± 4.1 12 ± 3.5 NS
Swollen joint count (N) 5 ± 2.1 7 ± 3.3 NS
Erythrocyte sedimentation rate (mm/h) 40 ± 15.2 46 ± 19.1 NS
C-reactive protein (mg/dL) 4.4 ± 1.9 4.9 ± 2.2 NS
Patients with dactylitis (N/%) 10 (13%) 0 (0%) 0.014
Patients with enthesitis/tenosynovitis (N/%) 22 (29%) 3 (5%) 0.002
Patients with extra-articular features (N/%) 8 (12%) 5 (9%) NS
Disease activity score 5.21 ± 0.87 5.48 ± 0.34 NS
Bath Ankylosing 6.1 ± 1.1
Spondylitis Disease
Activity Index
Psoriatic Arthritis Severity 8.7 ± 5.9
Index score
Methotrexate (N/%) 64 (84%) 47 (85%) NS

Notes: Bath Ankylosing Spondylitis Disease Activity Index was calculated in patients with axial and mixed pattern PsA (31 patients). Except where otherwise indicated, data are expressed as mean ± SD.

Abbreviations: N, number; NS, not significant; SD, standard deviation; VAS, visual analog scale.