Youth questionnaire responses before and after legislation, with effect sizes represented by ORs for post-legislation compared to pre-legislation responses from conditional logistic regression
| Pre-legislation (n=180) | Post-legislation (n=180) | OR post-legislation compared to pre-legislation (95% CI) | p Value | |
| Current regular smoker (>1/week or more) | ||||
| No | 162 (89.7%) | 161 (89.5%) | Reference | 0.90 |
| Yes | 18 (10.3%) | 19 (10.5%) | 1.10 (0.24 to 4.98) | |
| If you try to buy, likely to be successful?* | ||||
| Yes | 57 (31.8%) | 45 (25.2%) | 0.61 (0.34 to 1.09) | 0.10 |
| No | 106 (59.1%) | 121 (67.2%) | Reference | |
| Don't know | 16 (9.1) | 14 (7.6%) | ||
| No out of 100 children your age who smoke weekly?† | ||||
| 21–100 | 112 (62.3%) | 82 (45.5%) | 0.30 (0.16 to 0.57) | <0.001 |
| 0–20 | 56 (31.2%) | 78 (43.3%) | Reference | |
| Don't know | 12 (6.5%) | 20 (11.2%) | ||
| In last month, recall seeing tobacco displays in shops?* | ||||
| Yes | 146 (81.4%) | 40 (22.3%) | 0.05 (0.02 to 0.14) | <0.001 |
| No | 28 (15.4%) | 131 (72.7%) | Reference | |
| Don't know | 6 (3.2%) | 9 (5.0%) | ||
| Will removing cigarette/tobacco packs from view make it easier not to smoke?* | ||||
| Easier | 84 (46.8%) | 69 (38.1%) | 0.62 (0.36 to 1.04) | 0.07 |
| No difference | 82 (45.3%) | 88 (48.7%) | Reference | |
| Don't know | 14 (7.9%) | 24 (13.2%) | ||
↵* ‘No’ (or no difference) and ‘Don't know’ responses combined for logistic regression analysis. OR is therefore the odds of responding ‘Yes’ post-ban compared to pre-ban.
↵† ‘0–20’ and ‘Don't know’ combined, for logistic regression analysis. OR is therefore the odds of responding ‘21–100’ post-ban compared to pre-ban.