Table 1.

Demographic profile of cases included in the study (n = 203)

Age group	No. of patients	Percentage
<40	20	9.86
41–60	108	53.20
>60	75	36.94
Total	203	100
Gender
Male	181	89.16
Female	22	10.84
Total	203	100
Smoking status	Male	Female	M:F
Smoker	161	5	32.2:1
Nonsmoker	20	17	1.2:1
Total	181	22	8.2:1