| Parameter | Results |
| Age (years; mean ± SD) | 38.2 ± 8.6 |
| Gender n (%) |
|
| Male | 165 (55%) |
| Female | 135 (45%) |
| Educational qualifications n (%) |
|
| Primary school graduates | 60 (20%) |
| Secondary school graduates | 138 (46%) |
| College graduates | 102 (34%) |
| Socioeconomic status n (%) |
|
| Low | 69 (23%) |
| Medium | 153 (51%) |
| Adequate | 78 (26%) |
| Geographical location n (%) |
|
| Rural | 186 (62%) |
| Urban | 114 (38%) |
| Cigarette smoking n (%) |
|
| Smokers | 102 (34%) |
| Non-smokers | 198 (66%) |
| Alcohol consumption n (%) |
|
| Drinkers | 12 (4%) |
| Non-drinkers | 288 (96%) |