Demographic characteristics of sample by smoking status
| Smoking status | |||||
|---|---|---|---|---|---|
| Missing* | Never smoked* | Occasional smoker* | Regular smoker* | Total† | |
| *Number (%) of row total. †Number (%) of grand total. | |||||
| Total number | 16 (2.4) | 370 (55.9) | 214 (32.3) | 62 (9.4) | 662 |
| Ethnicity | |||||
| White | 10 (2.9) | 171 (49.1) | 125 (35.9) | 42 (12.1) | 348 (52.6) |
| Mixed | 0 (0.0) | 21 (50.0) | 20 (47.6) | 1 (2.4) | 42 (6.3) |
| Asian | 0 (0.0) | 115 (71.4) | 33 (20.5) | 13 (8.1) | 161 (24.3) |
| Black | 2 (6.7) | 18 (60.0) | 9 (30.0) | 1 (3.3) | 30 (4.5) |
| Other | 0 (0.0) | 2 (66.7) | 0 (0.0) | 1 (33.3) | 3 (0.5) |
| Missing | 4 (5.1) | 43 (55.1) | 27 (34.6) | 4 (5.1) | 78 (11.8) |
| Household composition | |||||
| In care | 0 (0.0) | 3 (20.0) | 9 (60.0) | 3 (20.0) | 15 (2.3) |
| 1 parent | 10 (7.1) | 72 (51.4) | 43 (30.7) | 15 (10.7) | 140 (21.1) |
| 2 parents | 5 (1.0) | 285 (58.8) | 154 (31.8) | 41 (8.5) | 485 (73.3) |
| Missing | 1 (4.5) | 10 (45.5) | 8 (36.4) | 3 (13.6) | 22 (3.3) |
| Sex | |||||
| Male | 9 (2.9) | 177 (56.2) | 101 (32.1) | 28 (8.9) | 315 (47.6) |
| Female | 6 (1.7) | 193 (55.8) | 113 (32.7) | 34 (9.8) | 346 (52.3) |
| Missing | 1 (100.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) | 1 (0.2) |
| Mean age (SD) | 13.5 (0.7) | 13.8 (0.7) | 13.9 (0.7) | 13.9 (0.6) | 13.9 (0.7) |