Postoperative ICU-LOS for those patients with PS of 0 to 9, and those with PS of 10 and above
| PS 0–9 | PS 10+ | p Value | |
| Mean ICU stay (days) | 1.49 | 2.89 | < 0.01 |
| Median ICU stay (days) | 1 | 1 | |
| IQR (days) | 1–1 | 1–2 | < 0.01 |
| 10th centile–90th centile (days) | 1–1 | 1–5 | < 0.01 |
IQR, interquartile range.