Table 3.
Logistic regression models to predict sleep bruxism at age 7
| Odds ratio (95% CI) | p | |
|---|---|---|
| Model 1 (n = 1283) | ||
| Covariates | ||
| Male gender, female (ref) | 1.26 (0.99–1.58) | 0.09 |
| Child’s age at baseline (5 months) | 1.20 (0.92–1.56) | 0.23 |
| Socioeconomic status at 1.5 years | 1.10 (0.97–1.25) | 0.17 |
| General anxiety scores at 1.5 years | 0.98 (0.90–1.07) | 0.63 |
| Separation anxiety trajectories a | ||
| High-Increasing separation anxiety | 2.23 (1.39–3.56) | 0.02 |
| High-Decreasing separation anxiety | 1.23 (0.83–1.84) | 0.35 |
| Low-Increasing separation anxiety | 1.24 (0.92–1.67) | 0.20 |
| Model 2a (n = 1283) | ||
| Covariates | ||
| Male gender, female (ref) | 1.14 (0.85–1.54) | 0.41 |
| Child’s age at baseline (5 months) | 1.11 (0.80–1.56) | 0.55 |
| Socioeconomic status at 1.5 years | 1.06 (0.90–1.25) | 0.48 |
| General anxiety scores at 1.5 years | 1.00 (0.89–1.11) | 0.94 |
| Sleep bruxism trajectoriesb | ||
| High-Increasing sleep bruxism at 4 years | 21.01 (14.57–30.30) | <0.001 |
| High-Increasing sleep bruxism at 1.5 years | 30.36 (19.62–46.98) | <0.001 |
| Low-Persistent sleep bruxism | 2.73 (1.76–4.23) | 0.005 |
| Separation anxiety trajectories a | ||
| High-Increasing separation anxiety | 1.26 (0.64–2.50) | 0.55 |
| High-Decreasing separation anxiety | 1.31 (0.79–2.17) | 0.36 |
| Low-Increasing separation anxiety | 1.10 (0.76–1.59) | 0.63 |
| Model 2b (n = 1306) | ||
| Covariates | ||
| Male gender, female (ref) | 1.22 (0.97–1.54) | 0.12 |
| Child aged 5 months | 1.17 (0.91–1.52) | 0.26 |
| Socioeconomic status at 1.5 years | 1.10 (0.97–1.25) | 0.15 |
| General anxiety scores at 1.5 years | 0.98 (0.90–1.06) | 0.57 |
| Sleep bruxism at 1.5 years | 1.75 (1.13–2.70) | 0.05 |
| Separation anxiety trajectories a | ||
| High-Increasing separation anxiety | 2.01 (1.25–3.22) | 0.04* |
| High-Decreasing separation anxiety | 1.13 (0.76–1.69) | 0.56 |
| Low-Increasing separation anxiety | 1.19 (0.89–1.60) | 0.28 |
For each model, all covariates were considered simultaneously. No significant interactions between child’s sex and separation anxiety trajectories were found. Therefore, the interaction term was not included in the three models. Data are courtesy of the Québec Institute of Statistics. 95% CI: 95% confidence interval.
aCompared with the Low-persistent separation anxiety trajectory.
bCompared with the Never-persistent bruxism trajectory.
*p < 0.05.