2011 | 2012 | 2013 | 2014 | Before–after comparison aORs* | |||||
---|---|---|---|---|---|---|---|---|---|
N | Per cent | N | Per cent | N | Per cent | N | Per cent | ||
Sample N (weighted) | 26 645 | 28 451 | 27 926 | 31 021 | |||||
Smoking and susceptibility status | 2014 vs 2011 | ||||||||
Never-smoker, not susceptible | 13 688 | 51 | 14 616 | 51 | 15 050 | 54 | 17 193 | 55 | 1.15 (1.09–1.22) |
Never-smoker, susceptible | 4275 | 16 | 4602 | 16 | 5185 | 19 | 5983 | 19 | 1.26 (1.18–1.33) |
Experimented | 6054 | 23 | 6781 | 24 | 5387 | 19 | 5274 | 17 | 0.73 (0.69–0.78) |
Currently smoke (monthly+) | 2521 | 9 | 2452 | 9 | 2139 | 8 | 2110 | 7 | 0.71 (0.64–0.79) |
Non-response | 101 | 1 | 0 | 0 | 149 | 1 | 461 | 2 | |
Tried cigarette first time (past 12 months) | 2014 vs 2012 | ||||||||
Yes | 3628 | 13 | 3245 | 12 | 3394 | 11 | 0.91 (0.84–0.98) | ||
No | 24 563 | 86 | 24 544 | 88 | 27 348 | 89 | 1.1 (1.02—1.19) | ||
Non-response | 259 | 1 | 136 | 0 | 279 | 0 |
ORs are bolded where 95% CIs do not overlap the null.
*aORs controlled for age, sex, ethnicity, SES, friend and parent smoking status, smoking in home.
aOR, adjusted OR; SES, socioeconomic status.