Table 3 Univariable and multivariable analysis of parameters for overall survival

Age ≥ 60 years

1.028

0.749—1.412

0.863

Female

0.872

0.637—1.194

0.394

BMI ≥ 24 kg/m²

0.981

0.721—1.333

0.901

ASA score 1–2

1.212

0.766—1.917

0.412

Primary site colon

1.186

0.870—1.618

0.281

Right hemicolon

1.162

0.778—1.736

0.464

R0 resection^a

0.506

0.368—0.694

< 0.001^*

0.635

0.455—0.887

0.008^*

Poorly differentiated

1.087

0.758—1.559

0.649

T3-T4

1.182

0.656—2.128

0.578

N1-N2^a

1.798

1.231—2.626

0.002^*

1.512

1.027—2.225

0.036^*

Synchronous metastasis

1.388

0.929—2.075

0.109

Extrahepatic metastases^a

1.804

1.176—2.768

0.007^*

1.705

1.100—2.641

0.017^*

Diameter of metastases > 5 cm

0.925

0.560—1.529

0.762

Multiple metastases^a

1.814

1.316—2.501

< 0.001^*

0.221

Bilobar distribution^a

1.899

1.386—2.602

< 0.001^*

0.663

Preoperative CEA > 50 ng/ml^a

1.703

1.190—2.437

0.004^*

1.500

1.039—2.166

0.030^*

Major liver resection^a

2.159

1.582—2.948

< 0.001^*

1.353

0.962—1.903

0.082^**

Hepatectomy only

0.969

0.701—1.339

0.848

Radio frequency ablation^a

1.523

0.986—2.354

0.058

0.764

Preoperative chemotherapy^a

1.630

1.177—2.258

0.003^*

0.856

Postoperative chemotherapy^a

0.605

0.444—0.825

0.001^*

0.591

0.432—0.809

0.001^*

Comorbidity

0.907

0.664—1.240

0.542

Postoperative complication^a

1.832

1.343—2.498

< 0.001^*

1.552

1.125—2.142

0.007^*

Postoperative major complication

1.218

0.810—1.833

0.344

Serious operation injury condition^a

2.072

1.520—2.824

< 0.001^*

1.539

1.101—2.151

0.012^*

AMLRI > 3.33^a

2.295

1.430—3.684

0.001^*

2.162

1.334—3.503

0.002^*

AST > 14 U/L

1.948

1.082—3.508

0.026^*

MLR > 0.15

1.618

0.982—2.667

0.059

Blood loss (ml)

1.969

1.399—2.771

< 0.001^*

Operation time (min)

1.596

1.170—2.177

< 0.001^*

CRS 3–5

1.788

1.312—2.436

< 0.001^*