Table 2.
Findings From Covariate-Adjusted Models Testing Smoking-Related Constructs Separately as Predictors of a Quit Attempt or Success
| Quit attempt OR (95% CI) | Quit success OR (95% CI) | |
|---|---|---|
| Cigarettes per day | ||
| Baseline | 0.97 (0.95, 0.996) | 1.00 (0.96, 1.05) |
| Reduction: baseline to week 6 | 1.03 (0.99, 1.07) | 1.10 (1.01, 1.19) |
| Time to first cigarette | ||
| Baseline | 1.28 (1.03, 1.59) | 1.07 (0.73, 1.55) |
| Increase: baseline to week 6 | 1.23 (1.04, 1.45) | 0.99 (0.74, 1.35) |
| Motivation to quit | ||
| Baseline | 1.07 (0.99, 1.15) | 1.03 (0.89, 1.20) |
| Increase: baseline to week 6 | 1.11 (1.02, 1.20) | 1.41 (1.16, 1.72) |
| Quitting self-efficacy | ||
| Baseline | 1.06 (0.98, 1.15) | 1.20 (1.04, 1.38) |
| Increase: baseline to week 6 | 1.13 (1.05, 1.21) | 1.18 (1.03, 1.36) |
| Anticipated urge to smoke if quit | ||
| Baseline | 0.94 (0.86, 1.02) | 0.93 (0.79, 1.09) |
| Reduction: baseline to week 6 | 1.02 (0.93, 1.12) | 1.23 (1.04, 1.47) |
| Positive affect | ||
| Baseline | 1.08 (0.99, 1.18) | 1.05 (0.89, 1.23) |
| Increase: baseline to week 6 | 1.07 (0.98, 1.18) | 1.00 (0.83, 1.19) |
| Negative affect | ||
| Baseline | 0.98 (0.91, 1.06) | 0.93 (0.80, 1.09) |
| Reduction: baseline to week 6 | 1.00 (0.92, 1.09) | 1.00 (0.85, 1.17) |
| Time spent around others who smoke | ||
| Baseline | 1.07 (0.87, 1.33) | 1.28 (0.88, 1.86) |
| Reduction: baseline to week 6 | 0.91 (0.73, 1.14) | 1.57 (1.06, 2.30) |
Quit attempt = self-reported intentional abstinence for more than 24 h after week 6. Quit success = self-reported 7-day point-prevalence abstinence at 26 weeks post-enrollment. OR = odds ratios, adjusted for assigned treatment condition, whether participants attended an additional 6 weeks of treatment, whether participants made a quit attempt during treatment between weeks 0 and 6, and baseline values of the smoking-related construct. Bold values represent significant findings (p < .05).