Table 1 Comparison of characteristics of all included patients
Variables | EXAI n = 104 n(%) | EXSI n = 104 n(%) | EVER n = 46 n(%) | P value |
|---|---|---|---|---|
Sex | 0.875 | |||
Male | 70 (67.3) | 68 (65.4) | 29 (63.0) | |
Female | 34 (32.7) | 36 (34.6) | 17 (37.0) | |
Age | 0.700 | |||
< 60 y | 58 (55.8) | 64 (61.5) | 27 (58.7) | |
≥ 60 y | 46 (44.2) | 36 (38.5) | 19 (41.3) | |
BMI, kg/m2 | 0.084 | |||
< 25 | 48 (46.2) | 64 (61.5) | 25 (54.3) | |
≥ 25 | 56 (53.8) | 40 (38.5) | 21 (45.7) | |
ASA score | 0.454 | |||
I | 6 (5.8) | 10 (9.6) | 2 (4.3) | |
II | 95 (91.3) | 92 (88.5) | 41 (89.1) | |
III | 3 (2.9) | 2 (1.9) | 3 (6.5) | |
Combined diabetes | 0.584 | |||
None | 70 (67.3) | 68 (65.4) | 34 (73.9) | |
Yes | 34 (32.7) | 36 (34.6) | 12 (26.1) | |
Abdominal surgery history | 0.917 | |||
None | 83 (79.8) | 81 (77.9) | 37 (80.4) | |
Yes | 21 (20.2) | 23 (22.1) | 9 (19.6) | |
Intestinal obstruction* | 0.236 | |||
None | 91 (87.5) | 90 (86.5) | 44 (95.7) | |
Yes | 13 (12.5) | 14 (13.5) | 2 (4.3) | |
Neoadjuvant therapy | 0.070 | |||
None | 76 (73.1) | 76 (73.1) | 41 (89.1) | |
Yes | 28 (26.9) | 28 (26.9) | 5 (10.9) | |
AJCC pTNM stage | 0.159 | |||
0 | 5 (4.8) | 4 (3.8) | 3 (6.5) | |
I | 39 (37.5) | 25 (24.0) | 19 (41.3) | |
II | 24 (23.1) | 38 (36.5) | 11 (23.9) | |
III | 36 (34.6) | 37 (35.6) | 13 (28.3) | |
Tumor size, cm, mean ± SD | 3.5 ± 1.7 | 3.8 ± 1.5 | 3.2 ± 1.5 | 0.112 |
Distance of the tumor from the anal verge, cm, mean ± SD | 5.2 ± 1.2 | 5.0 ± 1.2 | 4.4 ± 1.1 | 0.001 |