Table 1.
Sample characteristics by country (weighted).
| Characteristic | England n = 3819 |
Canada n = 3758 |
U.S. n = 3961 |
|---|---|---|---|
| Age, mean (SD) | 17.6 (1.05) | 17.5 (1.08) | 17.5 (1.07) |
| Sex | |||
| Male | 51.1 (1952) | 51.2 (1925) | 50.9 (2015) |
| Female | 48.9 (1867) | 48.8 (1833) | 49.1 (1946) |
| Ethnicity | |||
| White | 77.6 (2966) | 47.7 (1791) | 73.6 (2915) |
| Other | 22.4 (853) | 52.3 (1967) | 26.4 (1046) |
| Perceived SES | |||
| Not meeting basic expenses | 2.6 (99) | 4.0 (151) | 4.3 (171) |
| Just meeting basic expenses | 20.5 (781) | 22.1 (831) | 25.1 (995) |
| Meeting needs with a little left over | 36.6 (1399) | 34.2 (1284) | 35.8 (1419) |
| Living comfortably | 37.9 (1445) | 35.9 (1348) | 32.1 (1271) |
| Don’t know | 2.5 (95) | 3.8 (144) | 2.7 (105) |
| Cigarette Smoking | |||
| Never | 60.1 (2296) | 63.7 (2392) | 67.0 (2654) |
| Ever | 39.9 (1523) | 36.3 (1366) | 33.0 (1307) |
| Past 30 days | 16.5 (629) | 15.1 (568) | 12.0 (474) |
| Vaping (E-cigarette use) | |||
| Never | 67.3 (2571) | 62.8 (2358) | 66.5 (2633) |
| Ever | 32.7 (1248) | 37.3 (1400) | 33.5 (1328) |
| Past 30 days | 8.8 (335) | 14.6 (549) | 16.0 (635) |
| Cannabis | |||
| Never | 78.0 (2979) | 67.6 (2540) | 72.9 (2886) |
| Ever | 22.0 (840) | 32.4 (1218) | 27.1 (1075) |
| Past 30 days | 9.0 (342) | 16.6 (625) | 13.8 (546) |
Data are % (n) or mean (SD).