Table 4.

Predictors of time to first infection since 2006 for the PsC and PsA cohorts. An HR < 1 means that the risk of infection is lower than when the covariate is at the reference level.

Disease duration, yrs0.990.320.990.51
Active joint count, 1-unit increase1.010.13NANA
Male vs female0.630.00040.910.71
PASI, 1-unit increase0.990.200.990.75
Biologics, yes vs no1.610.0011.320.73
NSAID, yes vs no1.190.201.370.67
DMARD, yes vs no1.050.730.660.44
Ultraviolet therapy1.250.290.730.33
  • PsC: psoriasis without arthritis; PsA: psoriatic arthritis; PASI: Psoriasis Area and Severity Index; FCI: Functional Comorbidity Index; NSAID: nonsteroidal antiinflammatory drugs; DMARD: disease-modifying antirheumatic drugs; NA: not applicable.