Table 2 Surgery characteristics
|  | Group S (n = 37) | Group H (n = 35) | P |
|---|---|---|---|
Surgical procedure | |||
 Colon carcinoma/rectal cancer (n) | 17/20 | 19/16 | 0.479 |
Operation mode | |||
 Laparoscopic/hand-assisted laparoscopic / open (n) | 11/8/18 | 6/12/17 | 0.325 |
Surgeon | |||
 Group A/Group B/Group C (n) | 9/15/13 | 10/11/14 | 0.723 |
Operative time (min) | 178.97 ± 76.35 | 153.09 ± 58.66 | 0.110 |
Operative incision (cm) | 6 (5–15) | 10 (5–15) | 0.272 |
Intraoperative blood loss (ml) | 100 (50–175) | 100 (50–100) | 0.307 |
Intraoperative fluid replacement | |||
 Crystalloids (ml) | 1689.46 ± 561.42 | 1502.86 ± 414.43 | 0.115 |
 Colloids (ml) | 500 (100–500) | 500 (100–500) | 0.612 |
Urine volume (ml) | 150 (125–250) | 150 (100–250) | 0.900 |