Table 2 Univariable and multivariable analysis for patients before matching

Gender Female vs. Male

1.156

0.770–1.737

0.485

Age < 60 years vs. ≥ 60 years

1.165

0.748–1.813

0.499

Smoking No vs. Yes

1.197

0.769–1.863

0.426

Alcoholism No vs. Yes

1.691

1.110–2.577

0.015

1.482

0.963–2.281

0.074

ASA class II vs. III

0.982

0.601–1.605

0.943

Hypertension No vs. Yes

0.777

0.491–1.230

0.282

Diabetes mellitus No vs. Yes

1.145

0.661–1.984

0.628

CAD No vs. Yes

0.668

0.310–1.440

0.303

Hepatitis No vs. Yes

2.187

0.693–6.903

0.182

CEA < 5 ng/ml vs. ≥ 5 ng/ml

2.372

1.599–3.519

< 0.001

1.830

1.196–2.800

0.005

CA19–9 <37 U/ml vs. ≥37 U/ml

2.259

1.406–3.629

0.001

1.327

0.793–2.222

0.281

Albumin<40 g/dl vs. ≥ 40 g/dl

0.947

0.633–1.417

0.790

HGB <110 g/L vs. ≥110 g/L

1.475

0.874.485

0.536

Occult blood No vs. Yes

1.013

0.671–1.530

0.950

Operation time < 3 h vs. ≥ 3 h

0.894

0.603–1.325

0.576

Perioperative blood transfusion No vs. Yes

1.047

0.665–1.647

0.844

Tumor location Right-sided vs. Left-sided

0.900

0.475–1.706

0.746

Defunctioning stoma No vs. Yes

0.915

0.128–6.561

0.930

Postoperative complication Absent vs. Present

2.312

1.485–3.599

< 0.001

1.589

0.978–2.582

0.061

Differentiation Well/Moderate vs. Poor

2.442

1.617–3.688

< 0.001

1.698

1.083–2.663

0.021

Signet-ring cell component Absent vs. Present

6.603

2.082–20.938

0.001

1.821

0.522–6.349

0.347

Mucin No vs. Yes

1.226

0.750–2.002

0.416

PNI Yes vs. No

3.712

2.108–6.538

< 0.001

2.389

1.314–4.344

0.004

LVI Yes vs. No

2.709

1.720–4.266

< 0.001

1.600

0.977–2.619

0.062

T stage 1/2 vs. 3/4

2.809

1.568–5.034

0.001

1.417

0.757–2.655

0.276

N stage 0 vs. 1/2

2.905

1.875–4.500

< 0.001

1.704

1.048–2.771

0.032

TNM I/II vs. III

3.829

2.230–6.576

< 0.001

1.704

1.048–2.771

0.032