4. Results and discussion
4.1. Sample distribution
Demographic characteristics of respondents including gender, age, education status and occupation are given in Table 2. As it is clear from this table, 83% out of the total study group were male. Among the 2400 householders for whom the questionnaire filled out, 1061 participants (44.2%) were in the age-group of 31–45 years. A total of 1922 subjects (about 80%) were employed. Most of the participants had elementary and high school level education.