Logistic regression of association between susceptibility to smoke and pack appraisal of the ‘novelty’ Marlboro Bright Leaf pack
| Dependent variable: susceptibility, 1=Susceptible, 0=Non-susceptible | n=968 | AOR | 95% CI | p Value | |
|---|---|---|---|---|---|
| Lower | Upper | ||||
| Block 1 | |||||
| Close friends smoking | |||||
| Most do not smoke | 815 | 1.00 | 0.401 | ||
| Majority smoke | 46 | 1.48 | 0.77 | 2.83 | 0.240 |
| Do not know/not stated | 107 | 1.19 | 0.76 | 1.88 | 0.444 |
| Sibling smoking | |||||
| No siblings smoke | 807 | 1.00 | <0.001 | ||
| Any siblings smoke | 134 | 2.39 | 1.60 | 3.57 | <0.001 |
| Do not know/not stated | 27 | 1.99 | 0.89 | 4.44 | 0.093 |
| Parental smoking | |||||
| Neither parent smokes | 544 | 1.00 | 0.054 | ||
| Either parent smokes | 367 | 1.89 | 1.06 | 3.39 | 0.032 |
| Not sure/not stated/no mum/dad | 57 | 1.29 | 0.94 | 1.78 | 0.113 |
| Block 2 | |||||
| Gender | |||||
| Male | 497 | 1.00 | |||
| Female | 471 | 0.86 | 0.64 | 1.15 | 0.301 |
| Socioeconomic group | |||||
| ABC1 | 448 | 1.00 | |||
| C2DE | 520 | 0.79 | 0.59 | 1.06 | 0.120 |
| Age | 968 | 1.06 | 0.97 | 1.16 | 0.223 |
| Block 3 | |||||
| Packaging appraisal of Marlboro Bright Leaf | |||||
| Not positive appraisal | 828 | 1.00 | |||
| Positive appraisal | 140 | 2.51 | 1.71 | 3.67 | <0.001 |
| Model summary at each block | Test of model coefficients | Nagelkerke R | |||
| χ2 | df | p Value | |||
| Block 1 | 24.761 | 6 | <0.001 | 0.036 | |
| Block 2 | 7.819 | 3 | 0.050 | 0.047 | |
| Block 3 | 21.700 | 1 | <0.001 | 0.078 | |
| Final model | 54.279 | 10 | <0.001 | 0.078 | |
Nine hundred and sixty-eight cases analysed, 57 cases with missing values. Cases correctly classified=72.3%. Ninety-seven per cent of non-susceptible never smokers and 10.1% of susceptible never smokers were correctly classified.
AOR, adjusted OR.