Characteristics Percentages (%)
Mean Age (years)(SD) Age (Years)  
40-50 56
51-60 44
Gender  
Male 70
Female 30
Smoking Status  
Smoker 75
Non-Smoker 25
Frequency of Smoking(n=75)  
10-20 cigarette/day 60
> 20 cigarette /day 40
Table 1: Socio-demographic characteristics of study participants.