Close Margins in Oral Cancers: Implication of Close Margin Status in Recurrence and Survival of pT1N0 and pT2N0 Oral Cancers

Table 3

Cox regression analysis for risk of mortality in the studied patients.

Factors	Total sample	Death; (%)	Hazard ratio (95% CI)	value
Tobacco use
No	44	6 (13.6)	1.00	0.842
Yes	60	5 (8.3)	0.87 (0.22, 3.51)
HPE diagnosis
WDSCC	73	4 (5.5)	1.00
MDSCC	31	7 (22.6)	4.89 (1.19, 20.13)	0.028
Margin status
Clear	36	2 (5.6)	1.00
Close	68	9 (13.2)	1.17 (0.23, 5.88)	0.851
Perineural invasion
Absent	100	10 (10.0)	1.00
Present	4	1 (25.0)	1.71 (0.19, 15.20)	0.632
T stage
T1	54	2 (3.7)	1.00
T2	50	9 (18.0)	6.20 (1.27, 30.21)	0.024