Table 1.
Logistic and Cox regression analyses of smoking outcomes (n=249)
| Smoking outcome | Wald | p | OR (95% CI) | Step χ2 | Nagelkerke R2 |
|---|---|---|---|---|---|
| Continuous abstinencea | |||||
| Step 1: | 2.56 (2)=0.28 | .02 | |||
| Message framing condition | 1.58 | .21 | 1.43 (0.82–2.49) | ||
| Nicotine dependence | 0.95 | .33 | 0.76 (0.43–1.32) | ||
| Step 2: | 5.68 (1)=0.02 | .05 | |||
| Condition * Dependence | 5.50 | .02 | .25 (0.08–0.80) | ||
| PP abstinence at 6 weeks | |||||
| Step 1: | 2.98 (2)=0.23 | .02 | |||
| Message framing condition | 0.14 | .71 | 1.10 (0.66–1.83) | ||
| Nicotine dependence | 2.81 | .09 | 0.65 (0.39–1.08) | ||
| Step 2: | 1.11 (1)=0.29 | .02 | |||
| Condition * Dependence | 1.11 | .29 | 0.58 (0.21–1.61) | ||
| PP abstinence at 12 weeks | |||||
| Step 1: | 2.97 (2)=0.23 | .02 | |||
| Message framing condition | 0.35 | .56 | 1.20 (0.66–2.16) | ||
| Nicotine dependence | 2.56 | .11 | 0.61 (0.34–1.12) | ||
| Step 2: | 4.18 (1)=0.04 | .04 | |||
| Condition * Dependence | 4.03 | .045 | 0.28 (0.08–0.97) | ||
| PP abstinence at 24 weeks | |||||
| Step 1: | 1.03 (2)=0.60 | .01 | |||
| Message framing condition | 0.51 | .48 | 1.30 (0.64–2.64) | ||
| Nicotine dependence | 0.50 | .48 | 0.77 (0.38–1.58) | ||
| Step 2: | 4.07 (1)=0.04 | .04 | |||
| Condition * Dependence | 3.83 | .050 | 0.22 (0.05–1.00) | ||
| Latency to smoking lapse | |||||
| Step 1: | 0.63 (2)=0.73 | N/A | |||
| Message framing condition | 0.44 | .51 | 1.11 (0.82–1.49) | ||
| Nicotine dependence | 0.22 | .64 | 0.93 (0.69–1.26) | ||
| Step 2: | 0.57 (0.31–1.05) | 3.32 (1)=0.069 | N/A | ||
| Condition * Dependence | 3.30 | .069 |
a
Continuous abstinence = 6 weeks of non-smoking since the quit date; PP abstinence = 7 days of non-smoking within the past week