Table 3 characteristics of patients in the validation group
Factors | AL(n = 15) | NAL(n = 135) | P |
|---|---|---|---|
Patient related factors | |||
Age(years, \(\stackrel{-}{x}\pm s\)) | 63.3 ± 9.7 | 58.6 ± 10.8 | 0.133 |
Gender, n = No (%) | 0.130 | ||
Female | 3(20.0%) | 54(40.0%) | |
Male | 12(80.0%) | 81(60.0%) | |
Smoking, n = No (%) | 0.907 | ||
Yes | 5(33.3%) | 43(31.9%) | |
No | 10(66.7%) | 92(68.1%) | |
Alcohol excess, n = No (%) | 0.904 | ||
Yes | 4(26.7%) | 38(28.1%) | |
No | 11(73.3%) | 97(71.9%) | |
Previous history of malignancy, n = No (%) | 0.461 | ||
Yes | 1(6.7%) | 18(13.3%) | |
No | 14(93.3%) | 117(86.7%) | |
BMI(kg/m2, \(\stackrel{-}{x}\pm s\)) | 22.4 ± 2.2 | 22.8 ± 2.6 | 0.473 |
HbA1c, n = No (%) | 0.207 | ||
≤ 6.3% | 13(86.7%) | 128(94.8%) | |
> 6.3% | 2(13.3%) | 7(5.2%) | |
Diabetes mellitus, n = No (%) | 0.393 | ||
Yes | 2(13.3%) | 31(23.0%) | |
No | 13(86.7%) | 104(77.0%) | |
Hypertension, n = No (%) | 0.373 | ||
Yes | 6(40.0%) | 39(28.9%) | |
No | 9(60.0%) | 96(71.1%) | |
PCT, n = No (%) | 0.402 | ||
Yes | 4(26.7%) | 24(17.8%) | |
No | 11(73.3%) | 111(82.2%) | |
ASA grade, n = No (%) | 0.957 | ||
3 | 1(6.7%) | 12(8.9%) | |
2 | 5(33.3%) | 45(33.3%) | |
1 | 9(57.8%) | 78(57.8%) | |
Surgical related factors | |||
Operation time (min) | 0.478 | ||
Median(IQR) | 180(175,210) | 180(155,210) | |
Intraoperative blood loss (ml) | 0.894 | ||
Median(IQR) | 40(20,80) | 40(40,50) | |
LCA preservation, n = No (%) | 0.235 | ||
Yes | 11(73.3%) | 115(85.2%) | |
No | 4(26.7%) | 20(14.8%) | |
Number of staples fired, n = No (%) | 0.136 | ||
1 or 2 | 11(73.3%) | 118(87.4%) | |
>2 | 4(26.7%) | 17(12.6%) | |
Surgical approach, n = No (%) | 0.867 | ||
Laparoscopic | 13(86.7%) | 119(88.1%) | |
Open | 2(13.3%) | 16(11.9%) | |
Tumor related factors | |||
TD, n = No (%) | 0.022 | ||
≥ 7 cm | 3(20.0%) | 69(51.1%) | |
< 7 cm | 12(80.0%) | 66(48.9%) | |
Pathological T stage, n = No (%) | 0.352 | ||
Tis, T1, T2, | 5(33.3%) | 62(45.9%) | |
T3 and T4 | 10(66.7%) | 73(54.1%) | |
Pathological N stage, n = No (%) | 0.329 | ||
N0 | 2(13.3%) | 39(28.9%) | |
N1 and N2 | 13(86.7%) | 96(71.1%) | |
TNM stage, n = No (%) | 0.925 | ||
I | 1(6.7%) | 9(6.7%) | |
II | 8(53.3%) | 65(48.1%) | |
III | 6(40.0%) | 61(45.2%) | |
Tumor histological differentiation, n = No (%) | 0.288 | ||
High | 8(53.3%) | 47(34.8%) | |
Moderate | 5(33.3%) | 49(36.3%) | |
Low | 2(13.3%) | 39(28.9%) | |