Table 4.

Multivariate Cox regression analysis with (a) overall survival and (b) progression-free survival for p16 (n = 128)

Variables	p value	Hazard ratio	95% Confidence interval
(a) Overall survival
Age (< 70 versus ≥ 70)	< 0.001	0.339	0.195–0.589
Grading (G1 versus G2/3)	0.139	0.590	0.293–1.186
FIGO (I versus II–IV)	0.006	0.420	0.227–0.776
p16 (positive versus negative)	0.023	0.550	0.329–0.920
(b) Progression-free survival
Age (< 70 versus ≥ 70)	0.844	1.059	0.600–1.859
Grading (G1 versus G2/3)	0.728	0.874	0.409–1.868
FIGO (I versus II–IV)	0.486	0.805	0.437–1.482
p16 (positive versus negative)	0.006	0.408	0.215–0.771