Available data only§ | Selection modeling 1 | Selection modeling 2 | |||||||
---|---|---|---|---|---|---|---|---|---|
Estimate | SE | p-value | Estimate | SE | p-value | Estimate | SE | p-value | |
Transition model | |||||||||
From smoking to abstinent (abstinence model) | |||||||||
Intercept | -3.348 | 0.456 | < 0.0001 | -3.381 | 0.503 | < 0.0001 | -3.382 | 0.502 | < 0.0001 |
MDM | 0.056 | 0.166 | 0.737† | -0.026 | 0.193 | 0.446 | -0.022 | 0.188 | 0.453 |
HDM | 0.392 | 0.158 | 0.013† | 0.322 | 0.177 | 0.034 | 0.329 | 0.171 | 0.027 |
Gender | 0.504 | 0.137 | 0.0002 | 0.461 | 0.158 | 0.002 | 0.462 | 0.157 | 0.002 |
Cigarettes per day | -0.033 | 0.008 | < 0.0001 | -0.035 | 0.009 | < 0.0001 | -0.035 | 0.009 | < 0.0001 |
Motivation to quit | 0.144 | 0.040 | 0.0004 | 0.150 | 0.044 | 0.0003 | 0.150 | 0.044 | 0.0003 |
Confidence to quit | 0.083 | 0.026 | 0.0014 | 0.083 | 0.028 | 0.002 | 0.083 | 0.028 | 0.002 |
Serious quit attempt | 0.295 | 0.146 | 0.043 | 0.333 | 0.164 | 0.021 | 0.332 | 0.164 | 0.021 |
From abstinent to smoking (relapse model) | |||||||||
Intercept | -0.939 | 0.338 | 0.006 | -0.979 | 0.376 | 0.005 | -0.977 | 0.377 | 0.005 |
Month 18 | 0.763 | 0.318 | 0.016* | 0.792 | 0.306 | 0.005 | 0.788 | 0.301 | 0.004 |
Month 24 | -0.029 | 0.342 | 0.933* | -0.012 | 0.331 | 0.486 | -0.009 | 0.332 | 0.489 |
MDM | -0.708 | 0.331 | 0.033‡ | -0.624 | 0.372 | 0.047 | -0.629 | 0.375 | 0.047 |
HDM | -0.409 | 0.305 | 0.181‡ | -0.366 | 0.361 | 0.155 | -0.371 | 0.363 | 0.153 |
Income (> 40 K vs. ≤ 40 K) | -0.564 | 0.259 | 0.029 | -0.575 | 0.308 | 0.031 | -0.576 | 0.307 | 0.030 |
First cigarette (≤ vs. > 5 min) | 0.588 | 0.269 | 0.029 | 0.600 | 0.322 | 0.031 | 0.601 | 0.322 | 0.031 |
Missing model | |||||||||
Intercept | — | — | — | -0.527 | 0.339 | 0.060 | -0.626 | 0.432 | 0.074 |
Month 12 | — | — | — | — | — | — | 0.366 | 0.196 | 0.031 |
Month 18 | — | — | — | — | — | — | 0.072 | 0.176 | 0.341 |
Month 24 | — | — | — | — | — | — | 0.597 | 0.193 | 0.001 |
MDM | — | — | — | — | — | — | -0.416 | 0.164 | 0.006 |
HDM | — | — | — | — | — | — | -0.496 | 0.173 | 0.002 |
| — | — | — | 3.240 | 0.191 | < 0.0001 | 3.367 | 0.194 | < 0.0001 |
| — | — | — | 0.013 | 0.319 | 0.484 | 0.067 | 0.287 | 0.408 |
| — | — | — | -0.428 | 0.532 | 0.211 | -0.402 | 0.443 | 0.182 |