Sample characteristics, by country (n=12 064)
| Characteristic | Unweighted (n=12 064) | Weighted (n=12 064) | ||||
| Canada (n=4008) | USA (n=4086) | England (n=3970) | Canada (n=4008) | USA (n=4086) | England (n=3970) | |
| % (n) | % (n) | |||||
| Age | ||||||
| Mean (SD) | 17.7 (1.0) | 17.6 (1.1) | 17.7 (1.0) | 17.6 (1.0) | 17.5 (1.1) | 17.5 (1.0) |
| Sex | ||||||
| Male | 34.7 (1391) | 39.6 (1619) | 42.7 (1697) | 51.6 (2068) | 53.3 (2178) | 55.3 (2195) |
| Female | 65.3 (2617) | 60.4 (2467) | 57.3 (2273) | 48.4 (1940) | 46.7 (1908) | 44.7 (1775) |
| Smoking status | ||||||
| Never smoker | 70.6 (2829) | 67.6 (2763) | 59.2 (2349) | 78.4 (3143) | 60.7 (2481) | 61.9 (2459) |
| Experimental smoker | 24.7 (989) | 27.4 (1118) | 33.7 (1337) | 8.5 (341) | 28.0 (1143) | 20.6 (817) |
| Former smoker | 0.6 (23) | 0.6 (26) | 0.8 (32) | 1.6 (63) | 1.3 (55) | 1.8 (73) |
| Current smoker | 4.2 (167) | 4.4 (179) | 6.3 (252) | 11.5 (462) | 10.0 (408) | 15.6 (621) |
| Vaping status | ||||||
| Never vaper | 72.8 (2899) | 68.1 (2761) | 67.2 (2643) | 74.4 (2958) | 64.3 (2607) | 65.7 (2567) |
| Experimental vaper | 25.2 (1002) | 29.0 (1175) | 31.1 (1222) | 22.4 (890) | 30.5 (1239) | 30.9 (1209) |
| Former vaper | 0.4 (17) | 0.7 (28) | 0.5 (18) | 0.7 (28) | 1.0 (42) | 0.8 (33) |
| Current vaper | 1.6 (62) | 2.2 (90) | 1.2 (49) | 2.5 (101) | 4.1 (168) | 2.6 (101) |
Respondents with missing data for vaping status are not included in totals: unweighted sample n=98 (Canada=28; USA=32; England=38); weighted sample n=121 (Canada=31; USA=30; England=60).