Table 2.
Poisson regression analysis of the factors associated with the increased number of dental decay
| DT mean ± SD | Univariate analysis | Mulivariate analysis | |||||
|---|---|---|---|---|---|---|---|
| PR | 95% CI | p | PR | 95% CI | p | ||
| Age (/year) | 1.007 | 0.99–1.01 | 0.13 | 0.98 | 0.97–1.00 | 0,05 | |
| Gender | |||||||
| Male | 5.4 ± 3.7 | 1.03 | 0.86–1.24 | 0.68 | |||
| Female | 5.2 ± 3.4 | 1 | |||||
| Income | |||||||
| Low | 7.1 ± 3 | 1.65 | 1.30–2.07 | <0.001 | 1.45 | 1.05–2.02 | 0.02 |
| Medium | 5.4 ± 3.5 | 1.25 | 1.06 | 0.62 | |||
| High | 4.3 ± 3.7 | 1 | 1.02–1.52 | 0.02 | 1 | 0.83–1.34 | |
| Frequency of tooth brushing | |||||||
| 0 or 1/day | 6.8 ± 3. 3 | 1.54 | 1.20–1.97 | 0.001 | 1.006 | 0.74–1.35 | 0.97 |
| 2/day | 5.6 ± 3.6 | 1.34 | 1.06–1.58 | 0.009 | 1.03 | 0.83–1.28 | 0.74 |
| 3/day | 4.2 ± 3.6 | 1 | 1 | ||||
| Tooth brushing motion | |||||||
| Appropriate | 4.5 ± 3.5 | 0.65 | 0.54–0.77 | <0.001 | 0.81 | 0.98–1.50 | 0.06 |
| Inappropriate | 7 ± 3.4 | 1 | 1 | ||||
| Age at beginning tooth brushing | 1.16 | 1.08–1.24 | <0.001 | 1.15 | 1.05–1.25 | 0.02 | |
| Education level | |||||||
| Non and primary | 6 ± 3.6 | 1.35 | 1.09–1.68 | 0.006 | 1.14 | 0.81–1.58 | 0.43 |
| Secondary | 6.1 ± 3.4 | 1.49 | 1.23–1.81 | <0.001 | 1.37 | 1.09–1.71 | 0.006 |
| University | 4.4 ± 3.5 | 1 | 1 | ||||
| BMI | |||||||
| Underweight | 6.4 ± 3.9 | 1.58 | 1.29–1.94 | <0.001 | 1.66 | 1.30–2.12 | <0.001 |
| Normal weight | 4.4 ± 3.5 | 1 | 1 | ||||
| Overweight and obese | 5.3 ± 3.2 | 1.28 | 1.02–1.60 | 0.02 | 1.30 | 1.03–1.65 | 0.02 |
| SDI | 1.1 ± 0.3 | 0.88 | 0.79–0.99 | 0.03 | 0.61 | 0.50–0.75 | <0.001 |
| CSI* | 0.5 (0.16–1.16) | 0.94 | 0.84–1.07 | 0.40 | |||
| GI | 1.19 | 1.06–1.33 | 0.002 | 1.59 | 1.30–1.94 | <0.001 | |
| Reason of the dental attendance | |||||||
| Planned visit | 4.1 ± 3.3 | 0.73 | 0.54–0.90 | 0.004 | 0.94 | 0.74–1.18 | 0.62 |
| Acute visit | 5.7 ± 3.7 | 1 | 1 | ||||
* Median (interquartile range)
SD standard deviation, F female, M Male, BMI body mass index, DT number of decayed untreated teeth, GI gingival index, CIS calculus surface index, SDI simplified Debris index, PR prevalence ratio, 1 reference category