Table 3.
Statistical analysis. Residual deviances and AIC values of adjusted models. Only the main effects of visible dental biofilm, tongue coating and enzymatic activity were significant (P <0.05).
| Model | d.f. | Null deviances | Residual deviances | d.f.residual | p-value | AIC |
|---|---|---|---|---|---|---|
| Null | 45 | 59.44 | 1 | 61.4 | ||
| X1 | 44 | 55.06 | 4.38 | 1 | 0.036 * | 59.06 |
| X2|X1 | 43 | 50.56 | 4.50 | 1 | 0.034 * | 56.56 |
| X3|X1, X2 |
42 |
44.15 |
6.41 |
1 |
0.011 * |
52.15 |
| Model |
Estimates |
Standard error |
||||
| β0- Constant | -1.883 | 0.837 | ||||
| β1- X1 | 1.026 | 0.755 | ||||
| β2- X2 | 1.520 | 0.815 | ||||
| β3- X3 | 8.196 | 3.733 | ||||
AIC Akaike Information Criterion; d.f degree of freedom; X1presence /absence of visible dental biofilm; X2 presence /absence of tongue coating; X3salivary β-glucosidase activity.