Table 3.
Hierarchical Cox proportional-hazards regression models predicting risk of initiating smoking during the 50-minute delay period (N = 96)
| Variable | Hazard ratio | 95 % CI | p |
|---|---|---|---|
| Step 1 | |||
| FTND | 1.22 | 1.07–1.40 | .003 |
| Female | 1.02 | 0.61–1.67 | 0.94 |
| Received Alcohol vs. Placebo | 1.26 | 0.76–2.08 | 0.37 |
| Told Alcohol vs. Placebo | 1.21 | 0.73–2.01 | 0.46 |
| Step 2 | |||
| Received Alcohol × Female | 1.14 | 0.41–3.19 | 0.81 |
| Told Alcohol × Female | 3.87 | 1.30–11.53 | 0.015 |
Note. FTND = Fagerström Test for Nicotine Dependence. In this analysis, time to choosing to smoke was divided into 10 discrete 5-min segments representing the possible time periods in which participants could choose to smoke.