Socio-demographic characteristics
| Gender n (%) | Education n (%) | Employment n (%) | Housing n (%) | Nicotine use n (%) | Alcohol use n (%) |
| Males: 27 (31.4) Females: 59 (68.6) | Illiterate: 21 (24.4) Primary: 28 (32.6) Pre-university: 8 (9.3) Graduate: 29 (33.7) | Unemployed: 22 (25.6) Employed: 55 (64) Student: 9 (10.5) | Thatched house: 19 (22.1) Tiled house: 33 (38.4) Concrete house: 30 (34.9) Two-storey house: 4 (4.7) | 41 (47.7) | 34 (39.5) |