Table 3 Odds ratios (OR) and their 95% Confidence Intervals (CI) for the association between dental caries experience (decayed teeth (DT) and filled teeth (FT)) and periodontal inflammation (bleeding on probing (BOP) and pocket probing depth (PPD)) according to the two-level random intercept binary logistic regression analyses
From: Co-occurrence of dental caries and periodontitis: multilevel modelling approach
| Â | Zero model (0) | Main effect (1) only tooth level | Main effects (2) tooth-level and individual-leveli |
|---|---|---|---|
Outcome BOP | Â | Â | Â |
Fixed effects | OR (95% CI) | Â | Â |
 No DT (ref.) |  |  |  |
 DT |  | 1.62 (1.41–1.85) | 1.42 (1.20–1.67) |
ICC | 0.2815 | 0.2863 | 0.2681 |
Model fit BIC | 133950.147 | 79931.581 | 55706.451 |
Fixed effects | OR (95% CI) | Â | Â |
 No FT (ref.) |  |  |  |
 FT |  | 2.02 (1.90–2.14) | 2.07 (1.82–2.23) |
ICC | 0.2815 | 0.2854 | 0.2610 |
Model fit BIC | 133950.147 | 126821.384 | 87253.791 |
Outcome PPD | Â | Â | Â |
Fixed effects | OR (95% CI) | Â | Â |
 No DT (ref.) |  |  |  |
 DT |  | 1.52 (1.31–1.76) | 1.38 (1.15–1.67) |
ICC | 0.4752 | 0.4805 | 0.4176 |
Model fit BIC | 146459.355 | 88802.983 | 63309.641 |
Fixed effects | OR(95% CI) | Â | Â |
 No FT (ref.) |  |  |  |
 FT |  | 2.04 (1.90–2.20) | 2.01 (1.83–2.20) |
ICC | 0.4752 | 0.4873 | 0.4113 |
Model fit BIC | 146459.355 | 139539.056 | 97715.054 |