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Table 1 Baseline patient characteristics of study patients

From: Prognosis and postoperative genital function of function-preservative surgery of pelvic autonomic nerve preservation for male rectal cancer patients

Variables

PANP (n = 518)

Control (n = 434)

χ2/T value

P value

Age, years

58.61 ± 14.29

57.47 ± 13.51

1.26

0.21

Body mass index, kg/m2

22.16 ± 3.70

22.52 ± 3.55

1.53

0.13

Obstructiona

51 (10.9 %)

26 (6.4 %)

4.72

0.03

Distance from the lower edge of the tumour to anus (cm)

6.26 ± 2.86

6.01 ± 2.67

1.38

0.17

Tumour size (cm)

  

0.06

0.87

≤5

101 (19.5 %)

82 (18.9 %)

  

>5

417 (80.5 %)

352 (81.1 %)

  

Laparoscopy

262 (50.6 %)

240 (55.3 %)

2.11

0.15

Dukes stageb

  

1.97

0.16

A

106 (20.9 %)

88 (20.3 %)

  

B

214 (41.3 %)

160 (36.9 %)

  

C

113 (22.3 %)

114 (26.3 %)

  

D

73 (14.4 %)

72 (16.6 %)

  

Histological grade

  

2.55

0.28

Well differentiated

184 (35.5 %)

136 (31.3 %)

  

Moderately differentiated

232 (44.8 %)

216 (49.8 %)

  

Poorly differentiated

102 (19.7 %)

82 (18.9 %)

  

Surgical approach

  

1.77

0.19

Low anterior resection

130 (25.1 %)

93 (21.4 %)

  

Abdominoperineal resection

388 (74.9 %)

341 (78.6 %)

  
  1. Results are presented as mean ± SD or number (%). PANP pelvic autonomic nerve preservation
  2. aAvailable in 467 patients in PANP group and 408 patients in control group
  3. bAvailable in 506 patients in PANP group and 434 patients in control group