Table 1 Sample characteristics
Variables | categories | Total (N = 7,896,251) | Severity of Disability | |||
|---|---|---|---|---|---|---|
No disabilities (N = 7,514,703) | Mild disabilities (N = 232,062) | Severe disabilities (N = 149,486) | χ2 (P)a | |||
% | % | % | % | |||
Total | Â | 100 | 95.2 | 2.9 | 1.9 | Â |
Sex | Male | 49.8 | 49.1 | 65.0 | 64.2 | < 0.001 |
Female | 50.1 | 50.9 | 35.0 | 35.8 | ||
Age | < 20 | 15.4 | 16.2 | 0.4 | 4.1 | < 0.001 |
20–64 | 74.7 | 74.6 | 79.8 | 77.4 | ||
 ≥ 65 | 9.7 | 9.3 | 19.8 | 18.5 | ||
Residential areas | Large cities | 60.1 | 60.5 | 54.1 | 53.6 | < 0.001 |
Rural areas | 11.8 | 11.6 | 15.5 | 15.5 | ||
Small cities | 27.9 | 27.9 | 30.4 | 30.9 | ||
A regular source of dental care | No | 81.6 | 81.9 | 79.2 | 76.6 | < 0.001 |
Yes | 18.3 | 18.1 | 20.8 | 23.4 | ||
Medical Aid | No | 97.8 | 98.4 | 93.1 | 78.9 | < 0.001 |
Yes | 2.1 | 1.6 | 6.9 | 21.1 | ||
Income | Low | 16.2 | 15.6 | 25.0 | 35.3 | < 0.001 |
Middle | 58 | 58.3 | 56.3 | 48.4 | ||
High | 25.7 | 26.1 | 18.8 | 16.3 | ||
|  | Mean ± SD | p-value | ||||
Number of annual dental visits‡ | 2.25 ± 1.82 | 2.23 ± 1.79a | 2.61 ± 2.11b | 2.63 ± 2.64c | < 0.001 | |
Dental expenses per visit‡, § | 34.1 ± 22.7 | 34.1 ± 22.4b | 36.2 ± 29.0c | 32.2 ± 26.0a | 0.000 | |