Table 1.

Demographics features and tobacco and alcohol status.

Variable	Category	BIML	CTU	Oral Cancer	p value
Age (mean)		42.26 (12–89)	45.89 (18–73)	63.89 (40–85)	<0.0001 a
Gender	Female	127	32	17	0.03 b
	Male	76	12	21
Tobacco	Yes	108	23	18	0.8b
	No	95	21	20
Alcohol	Yes	128	27	25	0.91b
	No	75	17	13

BIML, Benign Irritative Mechanical Lesions; CTU, Chronic Traumatic Ulcer; ^aKruskal-Wallis. ^bChi-square.