Table 2
Variables predicting smoking status (in order of significance), by sex and age group, household population aged 25 or older, Canada, 2000/2001
| Smoking status model | Men | Women | ||||
|---|---|---|---|---|---|---|
| 25 to 44 | 45 to 64 | 65 or older | 25 to 44 | 45 to 64 | 65 or older | |
| Curent daily smoker | ||||||
| Explanatory variables | Education Home ownership Region of birth Marital status Employment status Income quintile Aboriginal ancestry Household size |
Home ownership Education Region of birth Marital status Income quintile Number of bedrooms Employment status Aboriginal ancestry Household size Rural/Urban |
Marital status Income quintile Household size Region of birth Home ownership Education |
Education Region of birth Home ownership Marital status Income quintile Household size Aboriginal ancestry Employment status Ethnicity |
Region of birth Home ownership Education Marital status Income quintile Household size Number of bedrooms Aboriginal ancestry Ethnicity |
Home ownership Ethnicity Education Marital status Region of birth Income quintile Household size |
| AUC | 0.702 | 0.677 | 0.643 | 0.729 | 0.672 | 0.586 |
| Optimal threshold | 0.305 | 0.257 | 0.108 | 0.269 | 0.223 | 0.105 |
| % correct predictions (optimal threshold) | 63.5% | 62.2% | 59.9% | 66.5% | 61.9% | 54.4% |
| % correct predictions (optimal threshold +/- 0.05) | 46.0% | 42.1% | 12.5% | 50.8% | 39.9% | 12.8% |
| % correct predictions (optimal threshold +/- 0.10) | 37.2% | 26.1% | 2.8% | 38.6% | 22.7% | 1.1% |
| Never smoker | ||||||
| Explanatory variables | Education Region of birth Home ownership Employment status Marital status Number of bedrooms Aboriginal ancestry Ethnicity Household size Income quintile |
Education Region of birth Home ownership Household size Marital status Employment status Number of bedrooms Income quintile Aboriginal ancestry Rural/Urban Ethnicity |
Region of birth Education Employment status Home ownership Marital status Aboriginal ancestry Ethnicity Household size Rural/Urban |
Region of birth Education Home ownership Household size Marital status Aboriginal ancestry Ethnicity Income quintile Employment status |
Region of birth Home ownership Marital status Education Number of bedrooms Aboriginal ancestry Ethnicity Income quintile Household size |
Region of birth Marital status Home ownership Ethnicity Aboriginal ancestry Income quintile Household size Rural/Urban Number of bedrooms |
| AUC | 0.679 | 0.659 | 0.596 | 0.703 | 0.637 | 0.591 |
| Optimal threshold | 0.574 | 0.698 | 0.731 | 0.552 | 0.549 | 0.385 |
| % correct predictions (optimal threshold) | 62.3% | 60.9% | 57.3% | 64.6% | 59.4% | 56.3% |
| % correct predictions (optimal threshold +/- 0.05) | 46.4% | 41.6% | 21.7% | 50.2% | 36.0% | 28.0% |
| % correct predictions (optimal threshold +/- 0.10) | 38.3% | 27.4% | 10.3% | 37.8% | 24.7% | 12.0% |
| AUC= Area Under Receiver-Operating Curve | ||||||
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