Table 3 Cox proportional hazards models for factors predictive of survival outcomes

PC primary tumor origin

 Gastric

1.60 (0.52–4.88)

0.411

 Appendiceal

0.34 (0.11–1.02)

0.054

 Colorectal

0.45 (0.15–1.33)

0.150

Complete cytoreduction

0.27 (0.12–0.63)

< 0.001*

Tumor recurrence

2.73 (1.58–4.73)

< 0.001*

PCI score

1.08 (1.03–1.14)

0.002*

PCI < 12

2.28 (1.01–5.12)

0.047*

PFS

0.89 (0.87–0.92)

< 0.001*

PC primary tumor origin

 Gastric

0.84 (0.36–1.98)

0.694

 Appendix

0.45 (0.21–1.00)

0.230

 Colorectal

0.62 (0.29–1.35)

0.049*

PCI score

1.05 (1.03–1.07)

< 0.001*