Table 4.

Cox regression analysis of oral cancer progression free survival.

	B	SE	Wald	df	Sig.	Exp(B)	95% CI
							Lower	Upper
Positive INV	2.138	0.556	14.808	1	0.001	8.485	2.855	25.213
Age	0.081	0.019	17.465	1	0.001	1.085	1.044	1.127
Histopathologic diagnosis			8.243	2	0.016
LGD	1.661	0.58	8.209	1	0.004	5.266	1.69	16.408
HGD	1.052	0.515	4.161	1	0.041	2.862	1.042	7.861
Severity of inflammation	0.357	0.256	1.945	1	0.163	1.429	0.865	2.36
Neutrophils	1.002	0.405	6.104	1	0.013	2.723	1.23	6.028
Gender	−0.18	0.401	0.202	1	0.653	0.835	0.381	1.832
Location	0.008	0.07	0.013	1	0.911	1.008	0.879	1.156

SE, standard error; df, degrees of freedom.