Table 2 Univariable and Multivariable Cox Regression for analyzing the factors associated with OS of OCLM

Race

 White

Reference

 Black

1.286(0.894–1.850)

0.175

 Other

1.137(0.815–1.586)

0.449

Age(years)

 ≤60

Reference

Reference

 61–72

1.399(1.119–1.750)

0.003

1.310(1.044–1.644)

0.020

 ≥73

1.739(1.336–2.263)

< 0.001

1.576(1.197–2.074)

0.001

Marital status

 Un-married

Reference

 Married

0.895(0.711–1.128)

0.349

Histology

 Non-serous

Reference

Reference

 Serous

0.466(0.379–0.573)

< 0.001

0.527(0.424–0.656)

< 0.001

Grade

 I + II

Reference

Reference

 III

1.364(1.032–1.803)

0.029

1.456(1.094–1.938)

0.010

 IV

1.255(0.940–1.677)

0.123

1.511(1.120–2.039)

0.007

Laterality

 Unilateral

Reference

 Bilateral

0.655(0.536–0.799)

< 0.001

Size (cm)

 ≤9.4

Reference

 9.5–12.6

0.893(0.683–1.167)

0.406

 ≥12.7

1.290(1.029–1.618)

0.028

T

 T1 + T2

Reference

 T3

0.579(0.436–0.769)

< 0.001

N

 N0

Reference

 N1

1.064(0.872–1.297)

0.543

LBB-Met

 None

Reference

Reference

 ≥1 site

1.711(1.348–2.173)

< 0.001

1.661(1.300-2.122)

< 0.001

Surgery(Pri)

 No

Reference

Reference

 Yes

0.281(0.203–0.390)

< 0.001

0.477(0.316–0.719)

< 0.001

Surgery(Met)

 No

Reference

 Yes

0.781(0.622–0.980)

0.033

Cytoreduction

 No

Reference

Reference

 Yes

0.512(0.400-0.656)

< 0.001

0.677(0.495–0.925)

0.014

Chemotherapy

 No

Reference

Reference

 Yes

0.272(0.207–0.358)

< 0.001

0.271(0.204–0.361)

< 0.001