Table 5

Spearman correlations between the PsAID scores and other measures of health status

Comparative measure of healthPsAID-12 correlation RPsAID-9 correlation R
Patient global assessment0.843 (p<0.0001)0.840 (p<0.0001)
Patient global (joints)0.836 (p<0.0001)0.845 (p<0.0001)
Patient global (neck, back, hip pain)0.709 (p<0.0001)0.711 (p<0.0001)
Patient global (psoriasis)0.554 (p<0.0001)0.550 (p<0.0001)
SF-36 aggregated physical score−0.725 (p<0.0001)−0.731 (p<0.0001)
SF-36 aggregated emotional score−0.597 (p<0.0001)−0.578 (p<0.0001)
HAQ0.723 (p<0.0001)0.721 (p<0.0001)
Pain numeric assessment0.834 (p<0.0001)0.842 (p<0.0001)
DLQI0.422 (p<0.0001)0.408 (p<0.0001)
EQ-5D−0.758 (p<0.0001)−0.752 (p<0.0001)
DAS28-ESR0.547 (p<0.0001)0.546 (p<0.0001)
Physician global assessment0.530 (p<0.0001)0.530 (p<0.0001)
  • Patient global assessment was evaluated by four global questions.

  • DAS28, Disease Activity Score (28 joints); DLQI, Dermatology Life Quality Index; EQ-5D, EuroQol-5D; ESR, erythrocyte sedimentation rate; HAQ, Health Assessment Questionnaire; PsAID, Psoriatic Arthritis Impact of Disease; SF-36, short form (36) generic quality of life scale.