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Percentage of smokers and nonsmokers who implemented voluntary smoke-free rules in the home and car, Minnesota Adult Tobacco Survey, 2014. Error bars indicate 95% confidence intervals.
| Category | Smoker, % (95% Confidence Interval) | Nonsmoker, % (95% Confidence Interval) |
|---|---|---|
| Home and car | 19 (16–22) | 85 (84–86) |
| Home but not car | 43 (39–47) | 10 (9–11) |
| Car but not home | 7 (5–9) | 2 (2–3) |
| Neither home nor car | 31 (28–35) | 4 (3–4) |
