Table 4 Univariate and multivariate logistic regression of the overall complications of the whole cohort

Age, year

1.025 (1.020–1.031)

 < 0.01*

1.020 (1.014–1.026)

 < 0.01*

Surgical methods (open/laparoscopic)

2.275 (1.942–2.664)

 < 0.01*

1.814 (1.533–2.146)

 < 0.01*

Sex (male/female)

0.801 (0.708–0.908)

 < 0.01*

0.873 (0.741–1.029)

0.105

BMI, Kg/m²

0.980 (0.962–0.999)

0.038*

0.987 (0.967–1.007)

0.189

Hypertension (yes/no)

1.320 (1.154–1.509)

 < 0.01*

1.087 (0.936–1.263)

0.274

T2DM (yes/no)

1.473 (1.230–1.763)

 < 0.01*

1.290 (1.064–1.563)

0.010*

Surgical history (yes/no)

1.281 (1.117–1.469)

 < 0.01*

1.235 (1.071–1.425)

0.004*

Tumor location (colon/ rectum)

0.906 (0.803–1.023)

0.111

Tumor stage (III/II/I)

1.013 (0.933–1.099)

0.767

Smoking (yes/no)

1.257 (1.111–1.423)

 < 0.01*

1.227 (1.026–1.468)

0.025*

Drinking (yes/no)

1.141 (1.002–1.300)

0.046*

0.965 (0.812–1.148)

0.690

CHD (yes/no)

1.622 (1.251–2.103)

 < 0.01*

1.283 (0.974–1.689)

0.076

Tumor size (≥ 5/ < 5), cm

1.273 (1.126–1.439)

 < 0.01*

1.120 (0.986–1.271)

0.081

K⁺ (Hypokalemia/ normal), g/L

1.479 (1.177–1.859)

0.001*

1.291 (1.017–1.639)

0.036*

Blood loss, mL

1.002 (1.002–1.003)

 < 0.01*

1.002 (1.001–1.002)

 < 0.01*