Table 3.
Odds ratios (OR) and 95% confidence intervals (CI) derived from multivariate binary logistic regression analysis with caries experience (presence vs. absence) as dependent variable
| Independent variables | Caries experience Deciduous dentition, OR (95% CI) |
P | Caries experience Permanent dentition, OR (95% CI) |
P |
|---|---|---|---|---|
| Age (years) | ||||
| 5–6 | 0.28 (0.22–0.36) | <0.001 | –‡ | |
| 7–8 | 0.61 (0.52–0.70) | <0.001 | 0.17 (0.14–0.21) | <0.001 |
| 9–10 | 1.0* | 0.55 (0.47–0.64) | <0.001 | |
| 11–12 | –† | 1.0* | ||
| Gender | ||||
| Girls | 0.91 (0.79–1.04) | NS | 1.31 (1.14–1.49) | <0.001 |
| Boys | 1.0* | 1.0* | ||
| Ethnic background | ||||
| Immigrants | 4.40 (3.51–5.52) | <0.001 | 2.65 (2.21–3.18) | <0.001 |
| Greek | 1.0* | 1.0* | ||
| Residence area | ||||
| Urban | 1.50 (1.16–1.94) | <0.01 | 0.89 (0.70–1.13) | NS |
| Semi-urban | 1.0* | 1.0* | ||
| Area-based income | ||||
| Low 1 | 1.72 (1.34–2.20) | <0.001 | 1.34 (1.06–1.69) | <0.01 |
| Low 2 | 1.25 (0.75–1.64) | NS | 2.07 (1.61–2.66) | <0.001 |
| Low 3 | 1.14 (0.95–1.41) | NS | 1.21 (0.97–1.50) | <0.10 |
| Low 4 | 1.23 (0.99–1.55) | NS | 1.21 (0.96–1.52) | NS |
| High 5 | 1.0* | 1.0* | ||
| Nagelkerke R2 | 0.121 | 0.167 | ||
*
Reference category.
†
Age group 11–12 not included in the analysis.
‡
Age group 5–6 not included in the analysis.