Table 1.
Characteristics of the participants at the first phase and at 2-year follow-up
| Variables | Baseline (T1) (n = 497) n (%) |
Follow-up (T2) (n = 290) n (%) |
Loss to follow-up (n = 207) n (%) |
|---|---|---|---|
| Gender | |||
| Boy | 214 (43.1) | 116 (40.0) | 98 (47.3) |
| Girl | 283 (56.9) | 174 (60.0) | 109 (52.7) |
| Father’s education | |||
| Illiterate/elementary school/middle school (0–8 years of schooling) | 87 (17.5) | 54 (18.6) | 30 (14.5) |
| High school or diploma (9–12 years of schooling) | 179 (36) | 98 (33.8) | 74 (35.7) |
| Associate/bachelor’s/master’s degree/doctorate (> 12 years of education) | 231 (46.5) | 138 (47.6) | 103 (49.8) |
| Mother’s education | |||
| Illiterate/elementary school/middle school (0–8 years of schooling) | 68 (13.7) | 41 (14.1) | 25 (12.1) |
| High school or diploma (9–12 years of schooling) | 213 (42.8) | 131 (45.2) | 76 (36.7) |
| Associate/bachelor’s/master’s degree/doctorate (> 12 years of education) | 216 (43.5) | 118 (40.7) | 106 (51.2) |
| Child birth order | |||
| First | 297 (59.8) | 169 (58.3) | 127 (61.4) |
| Second | 168 (33.8) | 94 (32.4) | 75 (36.2) |
| Third | 30 (6.0) | 26 (9.0) | 4 (1.9) |
| Forth and more | 2 (0.4) | 1 (0.3) | 1(.5) |
| Number of children in the household | |||
| One child | 164 (33.0) | 73 (25.1) | 75 (36.2) |
| Two children | 278 (55.9) | 162 (55.9) | 119 (57.5) |
| Three or more children | 55 (11.1) | 55 (19.0) | 13 (6.3) |
| Housing area | |||
| m2/p less than 20 | 198 (39.5) | 123 (42.4) | 81 (39.1) |
| m2/p equal or more than 20 | 299 (60.2) | 167 (57.6) | 126 (60.9) |
| Living district | |||
| Non affluent | 270 (54.3) | 178 (61.4) | 92 (44.4) |
| Affluent | 227 (45.7) | 112 (38.6) | 115 (55.6) |
| Oral health knowledge (9 questions) | |||
| 9 correct answers | 105 (21.1) | 51 (17.6) | 43 (20.8) |
| 0–8 correct answers | 392 (78.9) | 239 (82.4) | 164 (79.2) |
| Sugary snack intake per day | |||
| Less than two sugary snack/day | 179 (61.7) | ||
| Two or more than two sugary snack/day | 111 (38.3) | ||
| OHI-S | |||
| Mean OHI-S | 0.72 ± 0.40 | 1.07 ± 0.41 | 0.69 ± 0.38 |