Table 2 Univariate and multivariate COX regression analyses for OS of oCRC patients in the training cohort

Sex

Male

1

-

Female

0.878 (0.428, 1.800)

0.723

-

-

Age

<60

1

-

-

≥60

1.555 (0.712, 3.398)

0.268

-

-

Obstructive type

Acute complete obstruction

1

-

-

Incomplete obstruction

2.252 (0.307, 16.536)

0.425

-

-

Obstructive site

Right colon

1

-

-

Left colon

1.158 (0.518, 2.591)

0.721

-

-

Rectum

1.099 (0.410, 2.942)

0.851

-

-

Surgical procedure

Palliative resection

1

1

Radical resection

0.199 (0.094, 0.422)

<0.001

0.299 (0.139, 0.643)

0.002

T stage

T2+3

1

-

-

T4

2.229 (0.304, 16.366)

0.431

-

-

N stage

N0

1

1

N1

3.820 (1.374, 10.615)

0.01

3.187 (1.137, 8.938)

0.028

N2

6.582 (2.280, 19.005)

<0.001

4.098 (1.393, 12.051)

0.01

M stage

M0

1

-

-

M1

3.522 (1.714, 7.239)

0.001

-

-

TNM stage

I+II

1

-

-

III

6.084 (1.347, 27.475)

0.019

-

-

IV

14.472 (3.326, 62.961)

<0.001

-

-

Histopathology

Adenocarcinoma

1

-

-

Mucinous or signet ring adenocarcinoma

1.285 (0.571, 2.894)

0.544

-

-

WBC (×10^9/L)

<9.5

1

-

-

≥9.5

1.520 (0.619, 3.736)

0.361

-

-

NCP (%)

<75%

1

-

-

≥75%

2.159 (1.052, 4.432)

0.036

-

-

HGB (g/L)

≤120

1

-

-

>120

0.617 (0.299, 1.273)

0.192

-

-

PLT (×10^9/L)

<350

1

-

-

≥350

1.043 (0.426, 2.555)

0.927

-

-

CEA (ng/ml)

<5

1

1

≥5

4.301 (1.643, 11.259)

0.003

2.872 (1.065, 7.740)

0.037

CA19-9 (U/ml)

<27

1

-

-

≥27

2.356 (1.144, 4.852)

0.02

-

-

Albumin (g/L)

>40

1

-

-

≤40

0.783 (0.382, 1.602)

0.502

-

-

Na (mmol/L)

>137

1

-

-

≤137

1.794 (0.853, 3.775)

0.123

-

-

K (mmol/L)

>3.5

1

-

-

≤3.5

1.048 (0.366, 3.005)

0.93

-

-

Ca (mmol/L)

>2.11

1

-

-

≤2.11

2.002 (0.818, 4.902)

0.129

-

-

Cl (mmol/L)

>99

1

-

-

≤99

1.188 (0.454, 3.107)

0.726

-

-