Table 1.
Socio-demographic characteristics of respondent and their families
| Characteristics | Frequency | Percentage (%) |
| Type of college | ||
| Government | 285 | 49.5 |
| Private | 291 | 50.5 |
| Age of the respondent | ||
| 15–17 | 292 | 50.7 |
| 18–20 | 264 | 45.8 |
| 21 or above | 20 | 3.5 |
| Average age of the respondent(SD) | 17.6(1.5) | |
| Residential area of respondent | ||
| Gadap Town | 63 | 10.9 |
| Bin Qasim Town | 318 | 55.2 |
| Malir Town | 79 | 13.7 |
| other | 116 | 20.1 |
| Father's education level | ||
| No formal schooling | 96 | 16.7 |
| Primary (1–5) | 28 | 4.9 |
| Middle (6–8) | 42 | 7.3 |
| Matric (9–10) | 127 | 22.0 |
| Intermediate & above (11 onwards) | 283 | 49.1 |
| Mother's education level | ||
| No formal schooling | 303 | 52.6 |
| Primary (1–5) | 53 | 9.2 |
| Middle (6–8) | 48 | 8.3 |
| Matric (9–10) | 80 | 13.9 |
| Intermediate & above (11 onwards) | 92 | 16.0 |
| Number of siblings | ||
| 0–3 | 161 | 28.0 |
| 4–7 | 329 | 57.1 |
| 8 or above | 86 | 14.9 |
| Average no. of siblings (S.E) | 4.93 (2.4) | |
| Family history of smoking | ||
| Parent smokes | 157 | 27.2 |
| Brother smokes | 40 | 6.9 |
| Uncle smokes | 171 | 29.7 |
| Grandparents smoke | 35 | 6.1 |
| Cousin smoke | 23 | 3.9 |
| Friends smoking | ||
| Yes | 245 | 42.5 |
| No | 331 | 57.5 |
| Ever smoked | ||
| No | 422 | 73.3 |
| Yes | 154 | 26.7 |
| Age of starting smoking(n = 154) | ||
| 10–13 | 22 | 14.3 |
| 14–17 | 97 | 63.0 |
| 18 or above | 35 | 22.7 |
| Median age of starting smoking & percentiles | 16.0 | |
| 25 | 15 | |
| 50 | 16 | |
| 75 | 17 | |
| Current frequency of smoking(n = 154) | ||
| Daily | 37 | 24.0 |
| Once a week | 27 | 17.5 |
| Once a month | 20 | 13.0 |
| Occasionally | 55 | 35.7 |
| Not at all | 15 | 9.8 |
| Quantity daily smoked(n = 37) | ||
| < 1 | 11 | 29.7 |
| 1–3 | 10 | 27.0 |
| 4–6 | 11 | 29.7 |
| 5 or above | 5 | 13.5 |