Table-I.

Demographic Characteristics.

Characteristic	Type	Patients (n = 38)	Control (n = 38)	P value a
Age (year)c		50.9 ± 9.4	50.8 ± 10.3	0.952
Gender (n)	Male	26	23	0.472b
	Female	12	15
Smoking (n)	Yes	14	13	0.810b
	No	24	25
Substance use (n)	Yes	21	19	0.645b
	No	17	19
Lesion Differentiation	Well	20
	Moderate	16
	Poor	03

^ap value calculated by t-test or chi square;

^bstatistical significance; p < 0.05;

^cMean ± SD