Table 5

Time-dependent univariate Cox proportional regression for the development of peripheral disease among PsA patients who presented with isolated axial disease, adjusted by sex and age at diagnosis of PsA (N=32)

VariableHR95% CIP value
Sex (male)
Age at diagnosis of PsA in years
Sacroiliitis grade*1.302(0.497 to 3.406)0.591
Enthesitis0.000(0.000 to ∞)0.998
Elevated ESR1.292(0.454 to 3.672)0.631
Nail lesion0.984(0.388 to 2.500)0.974
PASI1.039(0.984 to 1.098)0.167
Uveitis2.752(0.883 to 8.572)0.081
HLA-B*277.544(1.792 to 31.769)0.006
NSAIDS0.924(0.322 to 2.655)0.884
DMARDS1.454(0.570 to 3.710)0.434
Biologics1.086(0.335 to 3.515)0.891
  • *The sacroiliac joint with the highest grade was used preferentially for analysis.

  • DMARD, disease-modifying antirheumatic drug; ESR, erythrocyte sedimentation rate; HAQ, Health Assessment Questionnaire; NSAID, nonsteroidal anti-inflammatory drug; PASI, psoriasis area and severity index; PsA, psoriatic arthritis.