Table 3 Multivariable analysis for risk of overall survival

Primary treatment

 Emergency surgery^a

0.95

0.034

 Time interval of < 11 days

0.99

0.82

0.38–1.75

0.99

 Time interval of 11–17 days

0.99

0.48

0.24–0.97

0.036

 Time interval of > 17 days

0.99

0.44

0.17–1.10

0.09

Age

 < 0.001

1.06

1.03–1.08

 < 0.001

Sex

 Male^a/female

0.13

BMI

0.93

ASA

 I–II^a/III

 < 0.001

1.93

0.97–3.82

0.06

Preoperative CEA

 < 0.001

1.32

1.11–1.58

0.002

Location

 Right^a

0.29

 Left

0.99

 Rectum

0.62

Pathologic size

0.19

Differentiation

 Undifferentiated

0.48

Pathologic stage

 I–II^a/III

0.06

0.90

0.52–1.58

0.72

Lymphatic invasion

 Present

0.011

1.56

0.95–2.55

0.08

Venous invasion

 Present

 < 0.001

2.79

1.60–4.88

 < 0.001

Peri-neural invasion

 Present

0.51

Microsatellite instability test

 Low or stable^a/high

0.20

Adjuvant chemotherapy

 < 0.001

0.74

0.44–1.23

0.24