Table 2 Univariate analyses and multivariate analyses of locoregional recurrence

Sex

1.023

0.666–1.571

0.916

–

–

–

Age

1.007

0.990–1.024

0.445

–

–

–

Tumor length

1.460

1.359–1.568

< 0.001

1.225

1.079–1.391

0.002

Tumor width

1.514

1.401–1.636

< 0.001

1.150

1.001–1.320

0.048

Tumor site

1.056

0.841–1.327

0.640

–

–

–

Pathological type

1.429

0.932–2.191

0.102

–

–

–

Differentiation

0.862

0.705–1.055

0.150

–

–

–

T-staging

4.006

2.898–5.539

< 0.001

3.048

2.182–4.256

< 0.001

N-staging

1.139

0.993–1.307

0.063

–

–

–

LVSI

1.321

0.939–1.858

0.110

–

–

–

PNI

1.561

1.096–2.223

0.014

1.289

0.901–1.842

0.165

Adjuvant chemotherapy

1.091

0.815–1.459

0.559

–

–

–