Table 3 Univariate and multivariate Cox regression for overall survival in ICC patients after curative resection before PSM

Age, year

1.114

0.900–1.379

0.319

Sex, male vs female

1.065

0.861–1.317

0.563

Hepatitis, no vs yes

0.926

0.742–1.156

0.498

Child-Pugh grade,

Grade A vs Grade B

1.404

1.122–1.757

0.003

Total bilirubin, μmol/L

< 20 vs ≥20

1.346

1.089–1.663

0.006

CA199, U/mL

< 200 vs ≥200

1.066

0.822–1.383

0.630

CEA, μg/L < 5 vs ≥5

1.302

1.020–1.660

0.034

Blood loss, ml

< 800 vs ≥800

1.162

0.890–1.518

0.270

Blood transfusion,

no vs yes

1.035

0.771–1.390

0.820

Tumor diameter, cm

≤5 vs > 5

1.730

1.377–2.174

< 0.001

Tumor number

single vs multiple

1.614

1.289–2.020

< 0.001

Surgical margin width, cm < 1 vs ≥1

0.745

0.588–0.945

0.015

Satellite nodules

no vs yes

1.689

1.350–2.112

< 0.001

Laparoscopy

no vs yes

1.074

0.639–1.806

0.786

Differentiation

moderate or high vs poor

0.957

0.731–1.254

0.751

Major hepatectomy

no vs yes

1.734

1.387–2.169

< 0.001

Hepatolith no vs yes

1.325

0.776–2.264

0.303

MVI no vs yes

1.636

1.215–2.203

0.001

Postoperative hospital stay, day < 15 vs ≥15

1.111

0.898–1.374

0.335