Table 4.

Results of the Multivariable Cox Regression Model for HPV Negative Patients (n = 104^*)

Risk Factor	n	HR (95% CI)	p-value
Age+	104	1.0 (1.01-1.06)	0.007
Race			0.003
White	52	1.0**
Black	52	2.0 (1.28-3.14)
Gender			0.052
M	79	1.0
F	25	1.6 (0.99-2.69)
Smoking and Drinking			0.29
No	17	1.0
Yes	87	1.4 (0.75-2.56)
Overall Stage		1.1 (0.84-1.40)	0.51
I	3
II	3
III	19
IVa	65
IVb	11
IVc	3

⁺testing for non-linearity for variable age was done, p-value=0.11.

^*Patients with complete records and therefore were entered into multivariable regression model.

^**Reference category.