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Table 5 Diagnostic properties for ordinal regression model

From: A patient-reported questionnaire developed in a German early arthritis cohort to assess periodontitis in patients with rheumatoid arthritis

Model Severity of detected PD Sensitivity (%) Specificity (%)
Age + number of teeth Mild, moderate or severe versus no 91.7 39.6
Moderate or severe versus no or mild 49.5 85.8
Severe versus no, mild or moderate 20.7 100
Age + 6 patient-reported items Mild, moderate or severe versus no 84.8 57.3
Moderate or severe versus no or mild 63.1 84.8
Severe versus no, mild or moderate 27.6 99.6
  1. Sensitivities and specificities for the detection of different levels of PD with the score derived from the ordinal regression model