Comparison of surgical factors between the groups
| Variables | Group I (N = 24) | Group II (N = 79) | P-value* |
|---|---|---|---|
| Duration of surgery (hours) | 4.55 ± 1.62 | 4.30 ± 1.58 | 0.566 |
| ≥ 5 h | 11 (45.8%) | 27 (34.18%) | 0.231 |
| Operative blood loss (mL) | 302.08 ± 419.23 | 193.75 ± 79.83 | 0.220 |
| ≥ 350 mL:< 350 mL | 7:17 (29.16%:70.83%) | 1:78 (1.27%:98.73%) | 0.004 |
| Urine volume during surgery (mL) | 718.75 ± 355.95 | 477.08 ± 279.74 | 0.012 |
| ≥ 600 mL:< 600 mL | 15:9 (62.50%:37.50%) | 23:56 (29.11%:70.89%) | 0.002 |
| Infusion amount | 2478.33 ± 1045.12 | 2110.42 ± 675.34 | 0.265 |
| APACHE II score (first 24 h in ICU) | 9.54 ± 4.02 | 6.75 ± 2.31 | 0.005 |
| ≥ 9:< 9 | 15:9 (62.50%:37.50%) | 13:66 (16.46%:83.54%) | 0.001 |
| Mortality predicted using the APACHE II score (%) | 10.02 ± 2.86 | 4.47 ± 2.35 | 0.002 |
* Compared with the analysis of variance for interval data or chi-square test for categorical data