Table 4 Multivariable analysis for risk of recurrence

Primary treatment

 Emergency surgery^a

0.53

0.88

 Time interval of < 11 days

0.99

0.96

0.41–2.26

0.99

 Time interval of 11–17 days

0.99

0.80

0.38–1.71

0.99

 Time interval of > 17 days

0.43

1.02

0.43–2.44

0.99

Age

0.004

1.03

1.01–1.05

0.013

Sex

 Male^a/female

0.11

BMI

0.90

ASA

 I–II^a/III

0.038

1.79

0.90–3.57

0.10

Preoperative CEA

0.028

1.17

0.98–1.41

0.09

Location

 Right^a

0.34

 Left

0.99

 Rectum

0.44

Pathologic size

0.76

Differentiation

 Undifferentiated

0.67

Pathologic stage

 I–II^a/III

 < 0.001

1.76

0.99–3.12

0.05

Lymphatic invasion

 Present

0.011

1.12

0.67–1.86

0.66

Venous invasion

 Present

 < 0.001

1.84

1.06–3.21

0.031

Peri-neural invasion

 Present

0.014

1.64

0.99–2.70

0.05

Microsatellite instability test

 Low or stable^a/high

0.18

Adjuvant chemotherapy

0.23