Table 2.

Univariate and multivariate analysis for progression-free survival and overall survival by the Cox regression analysis.

Variables	Univariate analysis			Multivariate analysis
	Hazard ratio	(95%CI)	p value	Hazard ratio	(95%CI)	p value
(a) Cox regression analysis on progression-free survival
PCI scorea	1.83	(0.83–4.09)	0.13	1.83	(0.74–4.52)	0.19
Agea	1.01	(0.99–1.02)	0.24	1.03	(0.40–2.67)	0.95
FIGO stage
IV versus III	1.00	(0.69–1.48)	0.96	1.07	(0.71–1.60)	0.73
Histology
Non high-grade serous versus High-grade serous	0.91	(0.55–1.45)	0.71	0.96	(0.56–1.59)	0.89
Surgical outcome
No residual disease versus Residual disease	0.36	(0.24–0.57)	< 0.01	0.44	(0.28–0.73)	< 0.01
Surgical complexity score
High versus Low, Moderate	0.62	(0.42–0.94)	0.02	0.61	(0.38–1.00)	0.05
(b) Cox regression analysis on overall survival
PCI scorea	2.43	(0.87–6.86)	0.09	3.24	(0.98–10.6)	0.05
Agea	1.03	(1.00–1.05)	0.02	1.89	(0.53–6.90)	0.33
FIGO stage
IV versus III	0.92	(0.56–1.50)	0.74	0.85	(0.50–1.43)	0.54
Histology
Non high-grade serous versus High-grade serous	1.08	(0.58–1.91)	0.78	1.39	(0.69–2.62)	0.34
Surgical outcome
No residual disease versus Residual disease	0.23	(0.14–0.39)	< 0.01	0.34	(0.19–0.63)	< 0.01
Surgical complexity score
High versus Low, Moderate	0.42	(0.26–0.70)	0.001	0.43	(0.23–0.79)	< 0.01

PCI: Peritoneal Cancer Index, FIGO: International Federation of Gynecology and Obstetrics.

^aTreated as a continuous variable.