Table 1.
Distribution of 12-year-old schoolchildren according to dependent and independent variables.
| Dependent variable | Categories | Number (%) |
| State of teeth | Good | 644 (77) |
| Bad | 194 (23) | |
| Independent variables | ||
| Gender | Girls | 359 (43) |
| Boys | 479 (57) | |
| Place of residence | Rural | 616 (74) |
| Urban | 222 (26) | |
| Socio-economic status | Poor | 212 (25)* |
| Middle class | 585 (70) | |
| High class | 40 (5) | |
| School performance | Good | 681 (81) |
| Poor | 157 (19) | |
| Bleeding gums | No | 143(17) |
| Yes | 695 (83) | |
| Bad breath | No | 547 (65) |
| Yes | 291 (35) | |
| Toothache | No | 266 (32)* |
| Yes | 571 (68) | |
| Food impaction | No | 239 (29) |
| Yes | 599 (71) | |
| Dental visits | Never | 504 (60) |
| Yes | 334 (40) | |
| Satisfied with appearance of teeth | Satisfied | 526 (63) |
| Dissatisfied | 312 (37) | |
| Oral health knowledge | Good | 487 (59)* |
| Poor | 344 (41) | |
| Caries experience | DMFT = 0 | 612 (73) |
| DMFT > 0 | 226 (27) | |
| Oral hygiene index | Good | 681 (81) |
| Fair | 157 (19) | |
| Anterior teeth fracture | No | 787 (94) |
| Yes | 51 (6) | |
* The totals of the numbers in the categories do not add up to 838 because of missing data