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Table 3 Discriminant validity of the CQR5 to identify ≥ 80% adherence by MPR after 1 year of bDMARD treatment

From: Predictive validity of the 5-item Compliance Questionnaire for Rheumatology (CQR5) in detecting poor adherence of patients with rheumatoid arthritis to biological medication

Sensitivity 89.87% 84.07–94.10%
Specificity 80.76% 67.46–90.37%
Area under the curve 0.85 0.79–0.89
Positive likelihood ratio 4.67 2.67–8.17
Negative likelihood ratio 0.12 0.07–0.20
Positive predictive value 60.90% 47.09–73.16%
Negative predictive value 95.98% 93.65–97.48%
Accuracy 83.04% 77.27–87.85%
  1. CQR5 5-item Compliance Questionnaire for Rheumatology, MPR medication possession ratio, bDMARD biological disease-modifying anti-rheumatic drug
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