Logistic regression of association between susceptibility to smoke and packaging receptivity to Silk Cut Superslims
| Dependent variable: susceptibility, 1=Susceptible, 0=Non-susceptible | n=970 | AOR | 95% CI | p Value | |
|---|---|---|---|---|---|
| Lower | Upper | ||||
| Block 1 | |||||
| Close friends smoking | |||||
| Most do not smoke | 814 | 1.00 | 0.948 | ||
| Majority smoke | 47 | 1.12 | 0.57 | 2.20 | 0.744 |
| Do not know/not stated | 109 | 1.00 | 0.64 | 1.59 | 0.985 |
| Sibling smoking | |||||
| No siblings smoke | 810 | 1.00 | <0.001 | ||
| Any siblings smoke | 132 | 2.22 | 1.48 | 3.32 | <0.001 |
| Do not know/not stated | 28 | 2.23 | 1.02 | 4.88 | 0.044 |
| Parental smoking | |||||
| Neither parent smokes | 550 | 1.00 | 0.010 | ||
| Either parent smokes | 362 | 2.05 | 1.15 | 3.67 | 0.015 |
| Not sure/not stated/no mum/dad | 58 | 1.46 | 1.06 | 2.01 | 0.019 |
| Block 2 | |||||
| Gender | |||||
| Male | 501 | 1.00 | |||
| Female | 469 | 0.88 | 0.66 | 1.18 | 0.384 |
| Socio-economic group | |||||
| ABC1 | 447 | 1.00 | |||
| C2DE | 523 | 0.85 | 0.63 | 1.14 | 0.270 |
| Age | 970 | 1.05 | 0.96 | 1.15 | 0.305 |
| Block 3 | |||||
| Packaging receptivity to Silk Cut Superslims | |||||
| Not receptive | 912 | 1.00 | |||
| Receptive | 58 | 4.42 | 2.50 | 7.81 | <0.001 |
| Model summary at each block | Test of model coefficients | Nagelkerke R | |||
| χ2 | df | p Value | |||
| Block 1 | 27.947 | 6 | <0.001 | 0.041 | |
| Block 2 | 4.824 | 3 | 0.185 | 0.048 | |
| Block 3 | 26.640 | 1 | <0.001 | 0.085 | |
| Final model | 59.411 | 10 | <0.001 | 0.085 | |
AOR, adjusted OR.
Nine hundred and seventy cases analysed, 55 cases with missing values. Cases correctly classified=72.7%. Ninety-six per cent of non-susceptible never smokers and 13.1% of susceptible never smokers were correctly classified.