Table 2 Comparison of perioperative indexes between robotic group and laparoscopic group
|  | Robot (n = 23) | Laparoscope (n = 23) | p |
|---|---|---|---|
Total operative time, mean (SD), min | 159(31) | 172(41) | 0.235 |
Time to naked the rectum, mean (SD), min | 86.4(20.9) | 103.8(31.5) | 0.033 |
Time of specimen removal, mean (SD), min | 13.2(2.69) | 14.4(2.59) | 0.125 |
Time of digestive tract reconstruction, mean (SD), min | 15.6(3.88) | 22.1(2.81) |  < 0.01 |
Estimated blood loss, mean (SD), ml | 79.5(32.3) | 106(25.9) | 0.04 |
Time to first flatus, mean (SD), h | 60(7) | 64(8) | 0.09 |
Time to liquid diet, mean (SD), h | 72.1(6.50) | 75.1(7.16) | 0.175 |
Time to remove urinary catheter, mean (SD), day | 3.67(0.71) | 4.43(0.95) | 0.003 |
Postoperative volume of abdominal drainage, mean (SD), ml | 276(63) | 327(77) | 0.02 |
Postoperative hospital stays, mean (SD), day | 10.9(5.5) | 10.7(5.4) | 0.936 |
Bacteriological examination of the ascites, n | 0 | 0 | NA |
Ascitic cancer cell examination, n | 0 | 0 | NA |
Harvested lymph nodes, n (%) | Â | Â | 0.305 |
  < 12 | 6(24) | 9(37.5) |  |
  ≥ 12 | 19(76) | 15(62.5) |  |
Perineural invasion, n (%) | 5(21.7) | 3(13) | 0.646 |
Lymphatic or vascular invasion, n (%) | 5(21.7) | 5(21.7) | 1 |
Positive margin, n | 0 | 0 | NA |
Postoperative complication, n (%) | 2(8.7) | 4(17.3) | 0.062 |
Pneumonia | 1 | 1 | Â |
Intestinal obstruction | 0 | 1 | Â |
Anastomotic leakage | 1 | 1 | Â |
Intra-abdominal infection | 0 | 1 | Â |
Complication of Clavien-Dindo classification ≥ 3, n | 0 | 0 |  |