Logistic regression of association between noticing cigarettes displayed and susceptibility, and survey stage, controlling for smoking-related and demographic variables
| Never-smokers noticing openly displayed at point of sale 1=notice (n=1693), 0=not (n=1225) | Never-smokers’ susceptibility to smoke 1=susceptible (n=673), 0=not (n=2239) | |||||||||
| n | AOR* | 95% CI Lower | 95% CI Upper | P value | n | AOR* | 95% CI Lower | 95% CI Upper | P value | |
| Survey stage | <0.001 | <0.001 | ||||||||
| Preban (2011) | 1001 | 2.13 | 1.73 | 2.63 | <0.001 | 1 001 | 1.31 | 1.06 | 1.62 | 0.014 |
| Mid-ban (2014) | 937 | Ref | 931 | Ref | ||||||
| Postban (2016) | 980 | 0.20 | 0.16 | 0.24 | <0.001 | 980 | 0.79 | 0.63 | 0.99 | 0.040 |
| Any close friends smoke | ||||||||||
| No | 2181 | Ref | 2176 | Ref | ||||||
| Yes | 737 | 1.39 | 1.13 | 1.72 | 0.002 | 736 | 2.21 | 1.81 | 2.71 | <0.001 |
| Any siblings smoke | 0.532 | <0.001 | ||||||||
| No/No siblings | 2425 | Ref | 2424 | Ref | ||||||
| Yes | 381 | 1.15 | 0.89 | 1.49 | 0.274 | 380 | 1.62 | 1.26 | 2.07 | <0.001 |
| Not sure/not stated | 112 | 1.08 | 0.70 | 1.68 | 0.721 | 108 | 2.18 | 1.43 | 3.31 | <0.001 |
| Parents smoke | 0.017 | <0.001 | ||||||||
| Neither smokes | 1641 | Ref | 1641 | Ref | ||||||
| Either | 944 | 1.32 | 1.08 | 1.60 | 0.005 | 942 | 1.31 | 1.07 | 1.60 | 0.010 |
| Not sure/not stated | 333 | 1.22 | 0.92 | 1.60 | 0.167 | 329 | 1.72 | 1.30 | 2.28 | <0.001 |
| Gender | ||||||||||
| Male | 1484 | Ref | 1483 | Ref | ||||||
| Female | 1434 | 0.86 | 0.73 | 1.02 | 0.084 | 1429 | 0.84 | 0.70 | 1.01 | 0.058 |
| Age | 0.207 | 0.002 | ||||||||
| 11 | 673 | Ref | 672 | Ref | ||||||
| 12 vs11 | 543 | 1.11 | 0.86 | 1.44 | 0.418 | 541 | 1.06 | 0.79 | 1.42 | 0.704 |
| 13 vs11–12 | 528 | 1.21 | 0.96 | 1.54 | 0.111 | 528 | 1.42 | 1.11 | 1.81 | 0.006 |
| 14 vs11–13 | 506 | 1.09 | 0.87 | 1.38. | 0.446 | 504 | 1.14 | 0.90 | 1.45 | 0.284 |
| 15 vs11–14 | 393 | 1.16 | 0.90 | 1.49 | 0.239 | 393 | 1.05 | 0.81 | 1.36 | 0.723 |
| 16 vs11–15 | 275 | 0.82 | 0.62 | 1.10 | 0.195 | 274 | 0.61 | 0.44 | 0.84 | 0.003 |
| Social grade | ||||||||||
| Middle class (ABC1) | 1257 | Ref | 1255 | Ref | ||||||
| Working class (C2DE) | 1661 | 1.00 | 0.84 | 1.18 | 0.955 | 1657 | 0.96 | 0.80 | 1.16 | 0.684 |
| Model χ²=656.03, df=14, p<0.001. Hosmer and Lemeshow χ²=11.742, df=8, p=0.163. Cases correctly classified: 73%. 35 cases excluded due to missing data on one or more independent variables. | Model χ²=170.52, df=14, p<0.001. Hosmer and Lemeshow χ²=4.471, df=8, p=0.812. Cases correctly classified: 77%. 41 cases excluded due to missing data on one or more independent variables. | |||||||||
*Adjusted for all other variables in the model.
AOR, adjusted OR; ref, reference category.