Table 1: Clinical characteristics of the study population.

VariablesMen Women values
n: 55n:  55

Age (yr) NS
Psoriasis onset age (yr) NS
Arthritis onset age (yr) NS
Psoriasis duration (yr) NS
Arthritis duration (yr) NS
Psoriasis-arthritis latency (yr) NS
Family history40%45.5%NS
Oligoarthritis42%34.5%NS
Polyarthritis 20%40%<0.05
Axial disease38.2%23.6%NS
Nail disease36.4%47.3%NS
DIP disease29%34.5%NS
IBP (ever)62%67.3%NS
Enthesitis34.5%25.5%NS
Dactylitis31%31%NS
HAQ <0.01
Swelling joint count <0.05
Tender joint count NS
Erosive disease34.5%41.8%NS
PASI NS
VSG NS
HLA-C*0656.4%56.4%NS
HLA-B2736.4%27.3%NS

DIP: distal interphalangeal joint. IBP: inflammatory back pain. HAQ: Health Assessment Questionnaire. PASI: Psoriasis Area and Severity Index.