Table 2.
Dental status of the study population across the four general intelligence score (GIS) categories.
| Parameter | GIS Categories (Mean ± SD or (%)) | Total Mean ± SD or (%) | p Value * | ||||
|---|---|---|---|---|---|---|---|
| 1–3 | 4–5 | 6–7 | 8–9 | ||||
| Decayed teeth | Mean ± SD | 3.14 ± 3.58 | 2.25 ± 2.87 | 1.75 ± 2.43 | 1.45 ± 2.19 | 2.09 ± 2.81 | <0.001 * |
| OR & 95% CI | 5.36 (5.06–5.68) | 2.19 (2.08–2.30) | 1.34 (1.27–1.41) | 1 | |||
| Missing teeth | Mean ± SD | 0.63 ± 1.24 | 0.58 ± 1.25 | 0.57 ± 1.38 | 0.51 ± 1.17 | 0.58 ± 1.29 | <0.001 * |
| OR & 95% CI | 1.65 (1.61–1.70) | 1.07 (1.04–1.11) | 1.06 (1.03–1.10) | 1 | |||
| Number of teeth in need of root canal treatment | Mean ± SD | 0.18 ± 0.60 | 0.09 ± 0.37 | 0.05 ± 0.28 | 0.04 ± 0.25 | 0.08 ± 0.37 | <0.001 * |
| OR & 95% CI | 1.15 (1.14–1.16) | 1.05 (1.04–1.05) | 1.01 (1.00–1.01) | 1 | |||
| Number of teeth in need of extractions | Mean ± SD | 0.22 ± 0.69 | 0.14 ± 0.52 | 0.11 ± 0.45 | 0.11 ± 0.45 | 0.14 ± 0.52 | <0.001 * |
| OR & 95% CI | 1.12 (1.11–1.13) | 1.03 (1.02–1.04) | 1.00 (0.99–1.01) | 1 | |||
| Decayed teeth as a dichotomized variable | CA | 13,811 (76.0) | 26,844 (67.5) | 25,188 (60.4) | 9284 (54.7) | 75,127 (64.4) | <0.001 ** |
| None-CA | 4361 (24.0) | 12,936 (32.5) | 16,542 (39.6) | 7687 (45.3) | 41,526 (35.6) | ||
* ANOVA, ** Pearson’s chi-square, general intelligence score (GIS), CA = presence of at least one decayed tooth; None-CA = decayed teeth were not detected on clinical examination.