Skip to main content

Table 4 Accuracy of different variables in predicting weaning failure

From: Thoracic fluid content: a novel parameter for predicting failed weaning from mechanical ventilation

Parameter AUC (95% CI) Sensitivity Specificity PPV NPV Cutoff value
TFC 0.69(0.57–0.80)* 65.2% 75.6% 60.0% 79.5% > 50 kΩ−1
Serum HCO3 0.60 (0.47–0.72) 56.5% 68.3% 50.0% 73.7% > 25 mmol.L−1
P/F ratio 0.64 (0.50–0.76) 90.0% 37.5% 41.9% 88.2% ≤ 397.5
RSBI 0.51 (0.38–0.65) 36.8% 72.5% 38.9% 70.7% > 51.1
Age 0.65 (0.52–0.76)* 82.6% 43.9% 45.2% 81.8% > 39 years
  1. AUC area under curve, CI confidence interval, TFC thoracic fluid content, P/F ratio PaO2/fraction of inspired oxygen, RSBI rapid shallow breathing index, PPV positive predictive value, NPV negative predictive value
  2. *Denotes statistical significance