Table 1.
Patient characteristics
| Variables | All (n = 136) | All (n = 136) | p value | |
|---|---|---|---|---|
| AL: − (n = 115) | AL: + (n = 21) | |||
| AL: −/+ | 115/21 (84.6/15.4) | |||
| Sex: Female/Male | 55/81 (40.4/59.6) | 52/63 (45.2/54.8) | 3/18 (14.3/85.7) | 0.016 |
| Age† | 68.0 [60.8, 74.0] | 68.0 [61.0, 74.0] | 65.0 [59.0, 69.0] | 0.134 |
| BMI† | 21.4 [19.5, 23.7] | 21.5 [19.4, 23.9] | 21.1 [20.7, 23.4] | 0.964 |
| Section: Ra/Rb | 60/76 (44.1/55.9) | 53/62 (46.1/53.9) | 7/14 (33.3/66.7) | 0.399 |
| NLR† | 2.4 [1.8, 3.4] | 2.3 [1.8, 3.3] | 2.9 [2.4, 3.4] | 0.075 |
| LMR† | 5.1 [3.5, 6.3] | 5.2 [3.6, 6.4] | 4.9 [3.2, 5.7] | 0.293 |
| Alb† | 4.2 [3.9, 4.5] | 4.2 [3.9, 4.5] | 4.1 [3.7, 4.4] | 0.242 |
| Stoma: −/+ | 84/52 (61.8/38.2) | 68/47 (59.1/40.9) | 16/5 (76.2/23.8) | 0.217 |
| Drain: −/+ | 72/64 (52.9/47.1) | 60/55 (52.2/47.8) | 12/9 (57.1/42.9) | 0.856 |
| Operation time (min)† | 348.5 [298.8, 453.2] | 339.0 [295.0, 436.0] | 445.0 [369.0, 489.0] | 0.037 |
| Blood loss (ml)† | 53.0 [20.0, 210.0] | 50.0 [20.0, 175.0] | 190.0 [50.0, 573.0] | 0.014 |
| Tumor size (mm)† | 35.0 [22.0, 50.0] | 33.0 [20.0, 50.0] | 60.0 [40.0, 70.0] | < 0.001 |
| Laparotomy: −/+ | 122/14 (89.7/10.3) | 106/9 (92.2/7.8) | 16/5 (76.2/23.8) | 0.043 |
| UICC-T factor | 0.213 | |||
| T0 | 1 (0.7) | 1 (0.9) | 0 (0.0) | |
| Tis | 2 (1.5) | 2 (1.7) | 0 (0.0) | |
| T1 | 33 (24.3) | 31 (27.0) | 2 (9.5) | |
| T2 | 36 (26.5) | 32 (27.8) | 4 (19.0) | |
| T3 | 60 (44.1) | 46 (40.0) | 14 (66.7) | |
| T4 | 4 (2.9) | 3 (2.6) | 1 (4.8) | |
| UICC-stage | 0.137 | |||
| 0 | 1 (0.7) | 1 (0.9) | 0 (0.0) | |
| I | 61 (44.9) | 56 (48.7) | 5 (23.8) | |
| II | 16 (11.8) | 12 (10.4) | 4 (19.0) | |
| III | 40 (29.4) | 33 (28.7) | 7 (33.3) | |
| IV | 18 (13.2) | 13 (11.3) | 5 (23.8) | |
| Neoadjuvant treatment*: −/+ | 124/12 (91.2/8.8) | 104/11 (90.4/9.6) | 20/1 (95.2/4.8) | 0.691 |
| Lateral pelvis (mm)† | 141.0 [135.0, 146.0] | 141.0 [136.0, 146.0] | 142.0 [132.0, 144.0] | 0.400 |
| Sacrum (mm)† | 123.0 [114.0, 133.2] | 123.0 [114.0, 132.5] | 130.0 [119.0, 142.0] | 0.029 |
| Pelvic inlet (mm)† | 115.0 [105.0, 122.0] | 114.0 [105.0, 121.5] | 115.0 [109.0, 123.0] | 0.545 |
| Pelvic outlet (mm)† | 89.0 [84.0, 96.2] | 89.0 [84.0, 98.0] | 91.0 [83.0, 94.0] | 0.411 |
Values in parentheses are percentages; †, median [interquartile range]; *, Neoadjuvant treatment includes neoadjuvant chemotherapy/chemoradiotherapy
AL anastomotic leakage; BMI body mass index; NLR neutrophil–lymphocyte ratio; LMR lymphocyte-monocyte ratio; Alb serum albumin; Tis tumor in situ