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Table 2 Diagnostic accuracy of electronic nose analysis

From: Exhaled breath profiling for diagnosing acute respiratory distress syndrome

Cohort Comparison ROC-AUC Specificity Sensitivity
Training ARDS vs. Control 0.72 (0.63-0.82) 42% 95%
External validation ARDS vs. Control 0.71 (0.54-0.87) 50% 89%
In-set: subgroup analysis Moderate/severe ARDS vs. Control 0.80 (0.70-0.90) 62% 91%
  Mild ARDS vs. Control 0.67 (0.56-0.77) 44% 89%
  Moderate/severe ARDS vs. Mild ARDS 0.69 (0.55-0.83) 46% 91%
  Pulmonary vs. non-pulmonary ARDS 0.52 (0.37-0.67) 74% 40%
In-set: competing diagnoses CPE vs. ARDS 0.65 (0.51-0.79) 58% 74%
  Pneumonia vs. ARDS 0.69 (0.49-0.88) 83% 64%
  CPE vs. Moderate/severe ARDS 0.76 (0.61-0.92) 74% 74%
  Pneumonia vs. Moderate/severe ARDS 0.76 (0.57-0.95) 91% 64%