Table 3 Univariate and multivariate analyses for STR among 94 PRPLS cases

Demographic characteristics

 Gender

0.923

0.377–2.259

0.861

 Age

1.027

0.987–1.070

0.190

 Preoperative NLR

1.029

0.934–1.134

0.567

1.055

0.932–1.194

0.399

 BMI (kg/m²)

0.949

0.825–1.092

0.463

 Smoking history

0.886

0.283–2.776

0.836

 Diabetes

0.769

0.146–4.067

0.757

 Clinical symptoms

2.702

0.968–7.539

0.058

2.794

0.771–10.124

0.118

Surgical characteristics

 Resection method

0.297

0.073–1.202

0.089

0.746

0.102–5.470

0.773

 Combined organ excision

1.842

0.709–4.783

0.210

 Operative time

1.005

0.999–1.011

0.078

1.000

0.991–1.009

0.970

 Intraoperative blood loss

1.001

1.000–1.002

0.006

1.000

0.999–1.001

0.481

 Intraperitoneal chemotherapy drug application

0.978

0.403–2.374

0.962

 Transfer to ICU

4.098

1.457–11.526

0.008

3.533

0.777–16.064

0.102

Pathological characteristics

 Tumor diameter

0.989

0.945–1.034

0.612

 Multiple primary tumors

1.359

0.476–3.878

0.566

0.677

0.153–3.001

0.608

 Irregular tumor shape

0.829

0.324–2.119

0.695

 Intact tumor capsule

0.231

0.086–0.618

0.004

0.230

0.058–0.915

0.037

Histological subtype

0.035

0.332

 De-differentiated vs. well-differentiated

5.914

1.484–23.564

0.012

2.690

0.454–15.932

 Other subtypes vs. well-differentiated

1.789

0.568–5.635

0.320

0.894

0.204–3.915

 Tumor necrosis

6.000

2.262–15.914

 < 0.001

4.375

1.198–15.975

0.026