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. 2016 May 2;31(12):1517–1526. doi: 10.1080/10410236.2015.1089456

Table 3.

Predictors of attempting to quit by the subsequent wave of observation.

    Bivariate
Adjusted model 1*
Adjusted model 2**
Adjusted model 3***
Independent variables % OR (95% CI) AOR (95% CI) AOR (95% CI) AOR (95% CI)
Country                  
 Australia 35% REF   REF   REF   REF  
 Canada 41% 1.19 a [1.01–1.41] 1.06 [0.89–1.26] 1.08 [0.90–1.30] 1.03 [0.86–1.24]
Heaviness of Smoking 2.2^ 0.82 c [0.78–0.86] 0.91e [0.85–0.96] 0.91 e [0.85–0.97] 0.90 e [0.85–0.96]
Recent quit behavior                  
 No 19% REF   REF   REF   REF  
 Yes 69% 12.48 c [10.42–14.93] 5.33 f [4.35–6.53] 4.93 f [4.00–6.08] 5.76 f [4.68–7.08]
Quit intentions                  
 No 21% REF   REF   REF   REF  
 Yes 59% 3.45 c [2.96–4.03] 2.15 f [1.76–2.61] 2.15 f [1.76–2.64] 2.24 f [1.84–2.73]
Self-efficacy 3.15^ 1.37 c [1.29–1.46] 1.17 f [1.08–1.27] 1.17 f [1.07–1.27] 1.19 f [1.09–1.29]
Response efficacy                  
 Low 29% REF   REF   REF   REF  
 Middle 33% 1.13 [0.95–1.35] 0.85 [0.66–1.09] 0.99 [0.77–1.28] 0.87 [0.68–1.11]
 High 45% 1.76 c [1.47–2.1] 1.13 [0.89–1.45] 1.43 e [1.11–1.83] 1.23 [0.97–1.57]
Reactance 3.3^ 0.95 [0.84–1.08] 1.01 [0.88–1.16] 1.04 [0.90–1.20] 0.98 [0.85–1.12]
Thinking about health risks 5.2^ 1.19 c [1.15–1.22] 1.08 f [1.04–1.12] N/A**   N/A***  
Forwent cigarettes due to HWLs                  
 Never 30% REF   REF   REF   REF  
 Once or more 63% 2.78 c [2.31–3.34] N/A*   1.97 f [1.576–2.466] N/A***  
Avoiding HWLs                  
 No 33% REF   REF   REF   REF  
 Yes 46% 1.34 c [1.16–1.56] N/A*   N/A**   1.41 f [1.17–1.70]

Note. ^ = Mean. Bivariate models: a, p < .05; b, p < .01; c, < .001. Adjusted models: d, p < .05; e, p < .01; f, p < .001. n smokers = 1,838 providing n observations = 7,120 (in CA n smokers = 917 providing n observations = 3,266 and in AU n smokers = 923 providing n observations = 3,854).

*Model adjusts for age, gender, education, income, survey wave, and time in sample, as well as all variables listed in the table but not forwent cigarettes due to HWLs and avoid HWLs.

**Model adjusts for age, gender, education, income, survey wave, and time in sample, as well as all variables listed in the table but not thinking about health risks and avoid HWLs.

***Model adjusts for age, gender, education, income, survey wave, and time in sample, as well as all variables listed in the table but not thinking about health risks and forwent cigarettes due to HWLs.