General estimating equations for binary outcomes: receptivity
| Dependent variable: pack receptivity 1=Receptive (score≥13) 0=Not receptive (score<13) | n=1001 | AOR | 95% CI | p Value | |
|---|---|---|---|---|---|
| Lower | Upper | ||||
| Block 1 | |||||
| Close friends smoking | |||||
| Most do not smoke | 842 | 1.00 | |||
| Majority smoke | 47 | 1.93 | 0.99 | 3.77 | 0.054 |
| Do not know/not stated | 112 | 1.22 | 0.70 | 2.14 | 0.485 |
| Sibling smoking | |||||
| No siblings smoke | 836 | 1.00 | |||
| Any siblings smoke | 137 | 1.12 | 0.65 | 1.92 | 0.690 |
| Do not know/not stated | 28 | 0.12 | 0.02 | 0.84 | 0.033 |
| Parental smoking | |||||
| Neither parent smokes | 567 | 1.00 | |||
| Either parent smokes | 375 | 0.84 | 0.57 | 1.24 | 0.389 |
| Not sure/not stated/no mum/dad | 59 | 0.75 | 0.35 | 1.63 | 0.472 |
| Block 2 | |||||
| Gender | |||||
| Male | 515 | 1.00 | |||
| Female | 486 | 0.86 | 0.60 | 1.25 | 0.433 |
| Socioeconomic group | |||||
| ABC1 | 461 | 1.00 | |||
| C2DE | 540 | 1.25 | 0.85 | 1.84 | 0.249 |
| Age | 1001 | 1.21 | 1.08 | 1.37 | 0.002 |
| Block 3 | |||||
| Pack | |||||
| Mayfair | 1001 | 1.00 | |||
| Silk cut superslims | 1001 | 1.41 | 1.13 | 1.76 | 0.002 |
| Marlboro bright leaf | 1001 | 1.27 | 1.03 | 1.58 | 0.027 |
| Pall mall | 1001 | 1.63 | 1.31 | 2.02 | <0.001 |
| Plain | 1001 | 0.85 | 0.68 | 1.07 | 0.172 |
| Model summary at each block | Test of model coefficients | QIC | |||
| Wald χ2 | df | p Value | |||
| Block 1 | 12.68 | 6 | 0.049 | 5148.46 | |
| Block 2 | 12.50 | 3 | 0.006 | 5099.46 | |
| Block 3 | 38.70 | 4 | <0.001 | 5317.10 | |
| Final model | 57.40 | 13 | <0.001 | 4894.45 | |