Table 6 Univariate and multivariate Cox regression for recurrence-free survival in ICC patients after curative resection after PSM

Age, year

1.047

0.723–1.517

0.807

Sex, male vs female

1.192

0.840–1.692

0.326

Hepatitis, no vs yes

0.899

0.620–1.302

0.572

Child-Pugh grade,

Grade A vs Grade B

2.004

1.273–3.153

0.003

Total bilirubin, μmol/L

< 20 vs ≥20

1.489

1.049–2.113

0.026

CA199, U/mL

< 200 vs ≥200

0.795

0.525–1.204

0.279

CEA, μg/L < 5 vs ≥5

1.031

0.710–1.498

0.871

Blood loss, ml

< 800 vs ≥800

1.086

0.730–1.617

0.683

Blood transfusion,

no vs yes

0.771

0.462–1.286

0.319

Tumor diameter, cm

≤5 vs > 5

1.650

1.089–2.501

0.018

Tumor number

single vs multiple

1.262

0.885–1.798

0.198

Surgical margin width, cm < 1 vs ≥1

0.964

0.657–1.415

0.853

Satellite nodules

no vs yes

1.357

0.954–1.930

0.090

Laparoscopy

no vs yes

0.742

0.327–1.686

0.476

Differentiation

moderate or high vs poor

0.619

0.407–0.942

0.025

Major hepatectomy

no vs yes

2.327

1.510–3.585

< 0.001

Hepatolith no vs yes

0.950

0.443–2.036

0.894

MVI no vs yes

2.038

1.433–2.898

< 0.001

Postoperative hospital stay, day < 15 vs ≥15

1.022

0.715–1.460

0.905