Table 2. Crude and adjusted analyses of the psychological factors associated with possible sleep bruxism by sex.
| Variables | Sleep bruxism | |||
|---|---|---|---|---|
| Male ( n = 983) | Female ( n = 1,067) | |||
| PR CRUDE (95%CI) | PR ADJUSTED £ (95%CI) | PR CRUDE (95%CI) | PR ADJUSTED a (95%CI) | |
| Stress level | ||||
| Low (score ≤ 14) | 1.00 | 1.00 | 1.00 | 1.00 |
| High (score > 14) | 1.11 (0.87–1.40) | 1.15 (0.88–1.50) | 1.49 (1.21–1.85) b | 1.61 (1.28–2.03) b |
| Stress level (score in quintiles) | ||||
| 1 st | 1.00 | 1.00 | 1.00 | 1.00 |
| 2 sd | 0.93 (0.65–1.35) | 0.98 (0.66–1.45) | 0.81 (0.54–1.19) | 0.72 (0.48–1.09) |
| 3 rd | 1.36 (0.98–1.89) | 1.35 (0.94–1.94) | 0.84 (0.59–1.22) | 0.80 (0.54–1.18) |
| 4 th | 1.10 (0.74–1.63) | 1.16 (0.75–1.82) | 1.26 (0.89–1.78) | 1.27 (0.89–1.80) |
| 5 th | 1.36 (0.94–1.97) | 1.49 (0.98–2.26) | 1.35 (0.98–1.87) | 1.42 (1.02–1.99) b |
Abbreviations: 95%CI, 95% confidence interval; PR, prevalence ratio.
Notes: a Adjusted by age and family income; b p -value = 0.001 in the regression analysis.