Table 3.
Association of sleep bruxism with vitamin D and other variable
| Variable | Value | B (SE) | Odds ratio | Confidence interval | P-valuea |
|---|---|---|---|---|---|
| Constant | – | −3.95 (0.94) | – | – | < 0.001 |
| Self-reported frequent headache | Yes | 2.22 (0.62) | 9.24 | 2.74–31.21 | < 0.001 |
| No (reference) | – | – | – | ||
| HADS- anxiety score | Abnormal | 1.44 (0.83) | 4.20 | 0.83–21.22 | 0.08 |
| Borderline | 2.05 (1.12) | 7.74 | 0.86–69.29 | 0.07 | |
| Normal (reference) | – | – | – | 0.07 | |
| HADS- depression score | Abnormal | 1.60 (1.09) | 4.97 | 0.59–42.11 | 0.14 |
| Borderline | 0.48 (0.70) | 1.62 | 0.41–6.35 | 0.49 | |
| Normal (reference) | – | – | – | 0.31 | |
| Daily dietary calcium intake (mg/day) | < 323 mg/day | 1.78 (0.71) | 5.94 | 1.47–23.99 | 0.01 |
| 324–600 mg/day | −0.38 (0.70) | 0.68 | 0.17–2.68 | 0.59 | |
| > 600 mg/day (reference) | – | – | – | 0.01 | |
| Serum 25-hydroxyvitamin D (ng/mL) | Deficient | 1.90 (0.83) | 6.66 | 1.31–33.85 | 0.02 |
| Insufficient | 2.46 (0.77) | 11.69 | 2.57–53.18 | < 0.01 | |
| Sufficient (reference) | – | – | – | 0.01 |
a Binary logistic regression (dependent variable: sleep bruxism versus controls), p-values < 0.05 was considered statistically significant are shown in bold. B: coefficient (intercept); SE Standard error, HADS Hospital anxiety and depression score