Table 4

Sensitivity, specificity, positive predictive value, negative predictive value and likelihood ratio of PASS with respect to the different indices used

Sensitivity
(95% CI)
Specificity
(95% CI)
Positive predictive value (95% CI)Negative predictive
value (95% CI)
Likelihood ratio
MDA0.96 (0.87 to 0.99)0.46 (0.32 to 0.61)0.67 (0.55 to 0.77)0.92 (0.73 to 0.99)1.8
VLDA1 (0.82 to 1)0.35 (0.22 to 0.48)0.30 (0.18 to 0.44)1 (0.80 to 1)1.6
DAPSA low disease activity0.81 (0.66 to 0.91)1 (0.81 to 1)1 (0.9 to 1)0.69 (0.48 to 0.85)
DAPSA remission1 (0.76 to 1)0.38 (0.24 to 0.53)0.32 (0.19 to 0.48)1 (0.81 to 1)1.62
PsAID ≤40.79 (0.65 to 0.89)0.77 (0.52 to 0.93)0.90 (0.77 to 0.97)0.58 (0.36 to 0.77)3.5
HAQ-DI ≤0.50.86 (0.74 to 0.93)0.68 (0.43 to 0.87)0.89 (0.78 to 0.95)0.61 (0.38 to 0.81)2.7
  • DPASA, disease activity score for psoriatic arthritis; HAQ-DI, Health Assessment Questionnaire-Disability Index; MDA, minimal disease activity; PASS, Patient’s acceptable symptom state; PsAID, Psoriatic arthritis impact of disease; VLDA, very low disease activity.