Table 1

Demographic and clinical characteristics of the different groups of patients

PsA n=27RA n=27PsO n=23HCs n=19
Sex distribution (M/F)16/117/2014/97/12
Age, mean (SD)56.8 (10)58.3 (11)56.6 (9)55.7 (10)
BMI (SD), kg/m2 26.9 (3.3)26.3 (3.3)25.9 (3.2)26.4 (3.6)
Employment (n, %)
 Manual6 (22.2)4 (14.8)6 (26.1)4 (21)
 Intellectual11 (40.7)12 (44.4)9 (39.1)8 (42.1)
 Unemployed10 (37)11 (40.7)8 (34.8)7 (36.8)
Duration of arthritis symptoms, years (mean (SD))5.6 (4.1)6.8 (5.1)
Duration of psoriasis, years (mean (SD))10.3 (10.1)13.4 (10.7)
Previous hand dactylitis, n (%)14 (51.8)0
Trigger finger, n (%)5 (18.5)3 (11.1)00
Nail involvement, n (%)11 (40.7)2 (8.7)
Scalp psoriasis, n (%)18 (66.7)13 (56.5)
Palmoplantar psoriasis, n (%)10 (37)7 (30.4)
Swollen joint count ≤1, n (%)3 (11.1)1 (3.7)
Tender joint count ≤1, n (%)4 (14.8)4 (14.8)
Increased CRP, n (%)1 (3.7)1 (3.7)
DAS-28 CRP, mean (SD)2.42 (0.48)2.48 (0.5)
RA test positive, n (%)020 (74.1)
APCA positive, n (%)019 (70.4)
  • APCA, anticitrullinated peptide antibody; BMI, body mass index; CRP, C reactive protein; DAS-28, disease activity score on 28 joints; HC, healthy control; PsA, psoriatic arthritis; PsO, psoriasis; RA, rheumatoid arthritis.