Table 3 Bivariate and multivariate analyses according to the time of the variable fluoridation in the 246 municipalities studied.
From: Inequalities in public water supply fluoridation in Brazil: An ecological study
Variable | n | Fluoridation before 1990 n = 72 n(%) | Fluoridation after 1990 n = 41 n(%) | Without fluoridation n = 133 n(%) | P-value* (bivariate) | P-value** (multivariate) |
|---|---|---|---|---|---|---|
HDI-M | ||||||
> 0.743 | 121 | 54 (44.6) | 28 (23.1) | 39 (32.2) | < 0.0001 | 0.416 |
≤ 0.743 | 125 | 18 (14.4) | 13 (10.4) | 94 (75.2) | ||
Percentage access to mains water | ||||||
> 84.24% | 123 | 59 (48.0) | 26 (21.1) | 38 (30.9) | < 0.0001 | 0.213 |
≥ 84.24% | 123 | 13 (10.6) | 15 (12.2) | 95 (77.2) | ||
Population size | ||||||
> 24440 inhabitants | 122 | 50 (41.0) | 21 (17.2) | 51 (41.8) | < 0.0001 | < 0.0001 |
≤ 24440 inhabitants | 124 | 22 (17.7) | 20 (16.1) | 82 (66.1) | ||
Macro region South/Southeast | 148 | 69 (46.6) | 34 (23.0) | 45 (30.4) | < 0.0001 | < 0.0001 |
Mid West and North/Northeast | 98 | 3 (3.1) | 7 (7.1) | 88 (89.8) |