Table 1 Comparison of postoperative conditions between RATV group and RATA group before and after PSM

Operative time, mean (SD), min

160.9(29.6)

144.3(37.1)

<0.001

158.1(28.7)

149(33.5)

0.027

Estimated blood loss, mean (SD), ml

67.1(29.4)

77.0(32.4)

0.016

67.3(28.2)

61.7(27.9)

0.251

1st flatus, mean (SD), hour

55.8(17.3)

52.2(19.2)

0.138

55.5(16.6)

51.0(19.0)

0.154

1st oral feeding, mean (SD), hour

70.9(18.3)

70.2(16.5)

0.749

72.7(16.6)

68.6(20.2)

0.198

Postoperative hospital stay, mean (SD), d

7.9(3.1)

9.1(3.7)

0.006

8.1(3.5)

8.4(3.8)

0.635

Postoperative complication, n (%)

12(14.1)

30(15.6)

0.747

10(14.9)

11(16.4)

0.812

Anastomotic leakage

1(1.3)

6(3.1)

0.68*

1(1.5)

2(3.0)

>0.999*

Rectovaginal fistula

2(2.3)

0(0)

0.093*

2(3.0)

0(0)

0.496*

Intestinal Obstruction

2(2.3)

6(3.1)

1(1.5)

2(3.0)

Wound-related

2(2.3)

3(1.5)

2(3.0)

1(1.4)

Urinary retention or infection

3(3.6)

6(3.1)

2(3.0)

3(4.5)

Pulmonary infection

2(2.3)

9(9.8)

2(3.0)

3(4.5)

Harvested lymph nodes, median (IQR), n

21(17-26)

24(19-30)

0.005

21(16-27)

20(16-26)

0.667

Perineural invasion, n (%)

54(63.5)

123(64.1)

0.932

43(64.2)

47(70.1)

0.462

Lymphatic or vascular invasion, n (%)

49(57.6)

119(62.0)

0.496

42(62.7)

44(65.7)

0.719

Positive margin

0(0)

0(0)

NA

0(0)

0(0)

NA