Table 3.
Estimation of the association between the studied variables and caries prevalence in the 12-year-old group, using bivariate and multivariate logistic regression models
| Variables | Bivariate model | Multivariate model | ||||
|---|---|---|---|---|---|---|
| OR | 95% CI | p-value | ORa | 95% CI | p-value | |
| Residence | ||||||
| Urban area | 1b | 1b | ||||
| Rural area | 1.31 | (0.99–1.73) | 0.0582 | 1.53 | (1.02–1.80) | 0.0380 |
| Frequency of toothbrushing | ||||||
| More than once a day | 1b | 1b | ||||
| Once a day | 1.32 | (0.94–1.85) | 0.1063 | 1.27 | (0.90–1.79) | 0.1816 |
| Less than once a day | 1.54 | (0.57–4.18) | 0.3970 | 1.33 | (0.48–3.65) | 0.5863 |
| Occasionally | 1.86 | (1.14–3.05) | 0.0136 | 1.83 | (1.07–3.15) | 0.0287 |
| Never or hardly ever | 10.34 | (1.96–54.39) | 0.0059 | 9.14 | (1.63–51.17) | 0.0120 |
| Dental hygiene | ||||||
| Absence of dental plaque | 1b | 1b | ||||
| Plaque on gingival border | 1.38 | (0.94–2.03) | 0.1020 | 1.27 | (0.86–1.89) | 0.2270 |
| Plaque on 1/3 gingival | 1.72 | (1.12–2.63) | 0.0132 | 1.55 | (1.01–2.39) | 0.0472 |
| Plaque on more than 1/3 gingival | 2.17 | (1.23–3.84) | 0.0077 | 2.03 | (1.11–3.70) | 0.0216 |
| Type of dental care | ||||||
| Public dental health services | 1b | 1b | ||||
| Private dental clinics | 1.20 | (0.89–1.61) | 0.2316 | 1.31 | (0.97–1.77) | 0.0770 |
| Dietary habits | ||||||
| Non-cariogenic diet | 1b | 1b | ||||
| Cariogenic diet | 2.21 | (1.15–4.25) | 0.0179 | 1.90 | (0.97–3.72) | 0.0626 |
aAdjusted for the effect of the other independent variables included in this table
bReference group