Table 5.
Predictors of quit maintenance
| Core predictor variable | Other variables included at each step |
|||
| Demographic set | Plus other motivation to quit variables | Plus motivation-related set | Plus dependence set | |
| Want to quit | ||||
| Waves 3–4 | 0.89 (0.78–0.99) | 0.95 (0.83–1.09) | 0.96 (0.82–1.13) | 1.00 (0.85–1.17) |
| Waves 4–5 | 0.81 (0.72–0.91) | 0.83 (0.71–0.96) | 0.90 (0.75–1.08) | 0.90 (0.75–1.08) |
| Waves 5–6 | 0.77 (0.68–0.87) | 0.86 (0.74–0.99) | 0.95 (0.80–1.14) | 0.96 (0.80–1.15) |
| Freq of butting out | ||||
| Waves 3–4 | 0.91 (0.83–0.99) | 0.94 (0.85–1.03) | 0.93 (0.84–1.02) | 0.90 (0.81–1.00) |
| Waves 4–5 | 0.88 (0.80–0.97) | 0.90 (0.82–1.00) | 0.90 (0.81–1.01) | 0.89 (0.80–0.99) |
| Waves 5–6 | 0.83 (0.74–0.92) | 0.87 (0.78–0.97) | 0.89 (0.79–0.99) | 0.85 (0.76–0.96) |
| Financial cost | ||||
| Waves 3–4 | 0.81 (0.72–0.91) | 0.83 (0.73–0.94) | 0.84 (0.74–0.96) | 0.89 (0.78–1.01) |
| Waves 4–5 | 0.82 (0.72–0.93) | 0.85 (0.74–0.98) | 0.87 (0.75–0.99) | 0.91 (0.79–1.05) |
| Waves 5–6 | 0.89 (0.78–1.02) | 1.01 (0.88–1.17) | 1.04 (0.90–1.20) | 1.12 (0.96–1.30) |
| Health concern | ||||
| Waves 3–4 | 0.87 (0.77–0.99) | 1.04 (0.86–1.25) | 1.04 (0.86–1.26) | 1.04 (0.86–1.26) |
| Waves 4–5 | 0.89 (0.77–1.03) | 1.17 (0.95–1.44) | 1.22 (0.99–1.51) | 1.20 (0.97–1.49) |
| Waves 5–6 | 0.72 (0.62–0.83) | 0.82 (0.66–1.00) | 0.86 (0.70–1.07) | 0.85 (0.68–1.05) |
| Health outcome expectancy | ||||
| Waves 3–4 | 0.92 (0.83–1.01) | 0.98 (0.87–1.10) | 0.97 (0.86–1.09) | 0.99 (0.88–1.12) |
| Waves 4–5 | 0.95 (0.85–1.05) | 1.06 (0.93–1.21) | 1.05 (0.92–1.20) | 1.08 (0.94–1.23) |
| Waves 5–6 | 0.88 (0.79–0.97) | 1.00 (0.88–1.14) | 0.99 (0.87–1.12) | 0.99 (0.86–1.13) |
| Lifestyle outcome expectancy | ||||
| Waves 3–4 | NA | NA | NA | NA |
| Waves 4–5 | 0.89 (0.79–0.99) | 0.93 (0.82–1.06) | 0.92 (0.81–1.05) | 0.92 (0.81–1.05) |
| Waves 5–6 | 0.90 (0.80–0.99) | 1.00 (0.88–1.14) | 1.02 (0.89–1.16) | 1.06 (0.92–1.22) |
| Overall attitude to smoking | ||||
| Waves 3–4 | 0.95 (0.84–1.06) | 1.00 (0.88–1.14) | 1.00 (0.88–1.14) | 1.01 (0.88–1.16) |
| Waves 4–5 | 0.90 (0.79–1.02) | 0.94 (0.82–1.08) | 0.93 (0.80–1.07) | 0.95 (0.82–1.10) |
| Waves 5–6 | 0.91 (0.81–1.04) | 1.04 (0.90–1.19) | 1.02 (0.89–1.18) | 1.02 (0.88–1.18) |
Notes. NA = not applicable.
Figures are odds ratios, and 95% CIs are in parentheses. Bold text indicates statistically significant at p < .05. Step 1 involves seven separate analyses for each wave, while Steps 2–4 are single analyses per wave. Waves 3–4 (n = 1,994 valid + 127 missing), Waves 4–5 (n = 1,662 valid + 103 missing), and Waves 5–6 (n = 1638 valid + 141 missing).