Table 6. Multivariable Cox proportional hazards analysis for PFS and OS to adjust the risk associated with therapy for various prognostic factorsa.

	PFS		OS
Prognostic factor	HR (95% CI)	P	HR (95% CI)	P
Treatment arm
No lymphadenectomyb	1	0.50	1	0.97
Lymphadenectomy	1.11 (0.82–1.50)		1.00 (0.71–1.44)
FIGO stage at primary surgery
1 or 2b	1	<0.001	1	<0.001
3 or 4	2.90 (1.98–4.24)		3.26 (2.02–5.27)

Abbreviations: FIGO=Federation of Gynaecology and Obstetrics; HR=hazard ratio; OS=overall survival; PFS=progression-free survival; 95% CI=confidence interval.

^aHR; 95% CI.

^bReference category.