Table 5– Areas under the receiver operating characteristic curves and cut-off values of various parameters for the prediction of cardiovascular and pulmonary complications
Area under the curveseLower–upper boundp-valueCut-offSensitivity %Specificity %
Total morbidity
V′O2 kg−10.7170.0450.651–0.7770.000112.85185
V′O2 kg−1 PBW0.7100.0450.643–0.7710.000115.86469
V′O2% pred0.6570.0450.589–0.7220.0010587548
 ASA score0.5930.0390.523–0.6610.015637148
 ppo FEV10.5650.0450.495–0.6330.7880646549
Cardiovascular complications
V′O2 kg−10.7080.0650.640–0.7710.001113.66372
V′O2 kg−1 PBW0.7380.0540.671–0.7980.000116.27561
V′O2% pred0.6330.0610.562–0.7000.0029536461
 ASA score0.6300.0460.560–0.6950.008037947
 ppo FEV1% pred0.4920.0660.422–0.5620.9030802979
Pulmonary complications
V′O2 kg−10.7230.0570.654–0.7840.000112.35686
V′O2 kg−1 PBW0.6910.0650.580–0.7180.002012.14594
V′O2% pred0.6160.0660.544–0.6840.0169373095
 ASA score0.5970.0440.527–0.6640.026937347
 ppo FEV10.5450.0510.480–0.6140.3716647350
  • V′O2: oxygen uptake; PBW: predicted body weight; % pred: % predicted; ASA: American Society Association; FEV1: forced expiratory volume in 1 s; ppo: predicted post-operative.