Table 5.
Multivariable Associations With Validated Cessation at 1 Month (n = 957, 91.1%)
| Variable | N | Adjusted OR | 95% CI | LRT | |
|---|---|---|---|---|---|
| Lower | Upper | P | |||
| Adherence 0–28 days | 957 | 1.11 | 1.09 | 1.13 | <.001 |
| Age full-time education finished | |||||
| ≤16 | 751 | ref | — | — | .044 |
| >16 | 206 | 1.54 | 1.01 | 2.35 | |
| Heaviness of smoking index (HSI) | |||||
| 0–3 | 631 | ref | — | — | .001 |
| 4–6 | 326 | 0.75 | 0.63 | 0.88 | |
| Baseline cotinine (ng × 10−1/ml) | 957 | 0.94 | 0.91 | 0.97 | <.001 |
| Treatment assignment | |||||
| Placebo | 483 | ref | — | — | .004 |
| NRT | 474 | 1.77 | 1.20 | 2.61 | |
CI = confidence interval; LRT = likelihood ratio test; NRT = nicotine replacement therapy; OR = odds ratio.