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Table 2 The discriminating power of the BASFI by age stratum according to the ROC curve

From: Normative values for the bath ankylosing spondylitis functional index in the general population compared with ankylosing spondylitis patients in Morocco

  AUC (CI:95%) Cutoff point Sensitivity (%) Specificity (%)
BASFI; 18-29 years 0.96 (0.93 - 0.99) 0.9 93 94
30-50 years 0.92 (0.89 - 0.96) 1.5 84 88
> 50 years 0.96 (0.93 - 0.99) 2.5 84 97
  1. AUC: area under the curve ROC, BASFI: Bath Ankylosing Spondylitis Functional Index; CI: confidence interval, ROC: Receiver Operating Characteristic