Table 2 Multivariable preoperative, postoperative and intra-ICU linear LOS analyses
From: Optimizing intensive care capacity using individual length-of-stay prediction models
| Â | Preoperative model | Postoperative model | Intra-ICU model |
|---|---|---|---|
(Constant) | 1.26 | 0.44 | 1.82 |
Expected session time (min) | 1.10 (1.01–1.21) |  |  |
Patient age (per decade) | 1.16 (1.06–1.28) | 1.20 (1.09–1.31) | 1.09 (1.02–1.17) |
FEV1 (l) | 0.91 (0.81–1.03) | 0.85 (0.75–0.96) |  |
Gastroesophageal reflux disease (yes/no) | 1.46 (1.14–1.89) | 1.53 (1.19–1.96) |  |
Vascular comorbidity (yes/no) | 1.29 (1.01–1.66) | 1.32 (1.03–1.69) |  |
Neurological comorbidity (yes/no) | 1.74 (1.24–2.43) | 1.82 (1.31–2.53) |  |
Previous chemotherapy (yes/no) | 0.81 (0.68–0.97) |  |  |
Previous radiotherapy (yes/no) |  |  | 0.78 (0.63–0.97) |
Transthoracic approach (yes/no) | 2.13 (1.74–2.62) | 1.79 (1.44–2.24) | 1.21 (1.05–1.40) |
Reconstruction using colon (yes/no) | 1.56 (1.05–2.30) | 1.52 (1.03–2.23) |  |
Observed session time (min) |  | 1.07 (0.98–1.16) |  |
Volume administration of colloids (liter) |  | 1.14 (1.01–1.29) |  |
Absolute intraoperative blood loss (l) |  | 0.94 (0.87–1.02) |  |
Absolute intraoperative urine production (l) |  | 1.12 (0.99–1.25) |  |
Epidural analgesia administration (yes/no) |  | 0.83 (0.69–1.01) |  |
Respiratory minute volume (l) |  | 1.09 (1.04–1.15) | 1.05 (1.01–1.09) |
Positive end-expiratory pressure (cmH2O) |  | 1.03 (0.99–1.07) |  |
Chylothorax surgical complication (yes/no) |  |  | 1.31 (0.96–1.79) |
Anastomosis leakage complication (yes/no) |  |  | 1.83 (1.47–2.28) |
Other complication (yes/no) |  |  | 1.71 (1.38–2.10) |
Pulmonary nonsurgical complication (yes/no) |  |  | 1.97 (1.72–2.26) |
Myocardial infarction (yes/no) |  |  | 1.54 (0.93–2.56) |
Infection (yes/no) |  |  | 1.61 (1.25–2.07) |
Other nonsurgical complication (yes/no) |  |  | 1.41 (1.22–1.62) |
Multiple r2 | 21% | 25% | 56% |
Optimism | 6% | 9% | 11% |
Optimism corrected r2 | 15% | 17% | 45% |