Table 1.
Proportions (%) of “weekly” and “rarely” bruxism by smoking status in men and women. Multinomial logistic regression: independent effects of cigarette smoking on “weekly” and “rarely” reported bruxism compared with the reference group of never bruxers. ORs and 95% CI adjusted for age and gender
| N = 3,124 | % of bruxers |
Multinomial regression |
|||
| Men | Female | OR | 95% CI | p value | |
| Weekly | |||||
| Never-smoker | 6.1 | 7.8 | 1 | (Reference category) | |
| Former smoker | 7.6 | 8.2 | 1.16 | 0.76–1.76 | .494 |
| Light smoker | 6.3 | 11.1 | 1.38 | 0.99–1.94 | .058 |
| Heavy smoker | 10.3 | 16.3 | 2.45 | 1.75–3.44 | <.001 |
| Rarely | |||||
| Never-smoker | 20.8 | 20.5 | 1 | (Reference category) | |
| Former smoker | 21.6 | 22.6 | 1.11 | 0.85–1.45 | .434 |
| Light smoker | 24.2 | 24.1 | 1.27 | 1.02–1.59 | .035 |
| Heavy smoker | 28.2 | 23.4 | 1.86 | 1.47–2.36 | <.001 |
Note. OR = odds ratio.