Table 5. Multivariable cox proportional hazards analysis for progression-free and overall survival.

	Progression-free survival		Overall survival
	HR (95%CI)	P	HR (95%CI)	P
Treatment arm
No lymphadenectomya		0.16		0.56
Lymphadenectomy	0.72 (0.46–1.14)		0.85 (0.49–1.47)
Grade
1 or 2a		0.01		0.08
3	1.84 (1.14–2.96)		1.66 (0.93–2.95)

HR=hazard ratio CI=confidence interval.

^aReference category