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Table 4 Area under the ROC curve for each variable—all patients

From: Mechanical power normalized to lung-thorax compliance predicts prolonged ventilation weaning failure: a prospective study

Variables Failure of prolonged weaning
Post-SBT Pre-weaning completion
PaCO2 on MV 0.81 (0.73–0.87) 0.86 (0.78–0.91)
VR 0.78 (0.70–0.85) 0.74 (0.66–0.81)
LTCdyn 0.74 (0.65–0.81) 0.82 (0.75–0.89)
MP 0.74 (0.65–0.81) 0.70 (0.61–0.77)
PBW-MP 0.76 (0.68–0.83) 0.75 (0.66–0.82)
LTCdyn-MP 0.79 (0.71–0.86) 0.86 (0.78–0.91)
PIrs1.0 0.84 (0.76–0.90) 0.91 (0.84–0.95)
PIrs2.0 0.86 (0.79–0.92) 0.92 (0.86–0.96)
  1. The accuracy of each variable in the whole study population presented as the area under the ROC curve with 95% confidence intervals
  2. SBT spontaneous breathing trial, MV mechanical ventilation, VR ventilatory ratio, LTCdyn dynamic lung-thorax compliance, MP mechanical power, PBW-MP mechanical power normalized to predicted body weight, LTCdyn-MP mechanical power normalized to dynamic lung-thorax compliance, PIrs power index of the respiratory system