| Boy (N = 300) | Girl (N = 300) | P-value |
---|---|---|---|
Age, years; mean ± SD | 13.41 ± 0.76 | 13.15 ± 0.75 | < 0.0001 |
Father Educational level; N (%) | 0.001a | ||
 Illiterate | 25 (8.3) | 24 (8.0) | |
 Middle school | 118 (39.3) | 87 (29.0) | |
 Diploma | 91 (30.3) | 96 (32.0) | |
 Upper Diploma | 16 (5.3) | 23 (7.7) | |
 Bachelor’s degree | 11 (3.7) | 36 (12.0) | |
 Post graduate | 15 (5.0) | 23 (7.7) | |
 Missing | 24 (8.1) | 11 (3.7) | |
 Total | 300 (100) | 300 (100) | |
Mother Educational level; N (%) | 0.019a | ||
 Illiterate | 17 (5.7) | 17 (5.7) | |
 Middle school | 87 (29.0) | 79 (26.3) | |
 Diploma | 126 (42.0) | 113 (37.7) | |
 Upper Diploma | 27 (9.0) | 24 (8.0) | |
 Bachelor’s degree | 14 (4.7) | 37 (12.3) | |
 Post graduate | 12 (4.0) | 20 (6.7) | |
 Missing | 17 (5.6) | 10 (3.3) | |
 Total | 300 (100) | 300 (100) | |
Tooth-brush; N (%) | < 0.0001a | ||
 Less than once a day | 205 (68.3) | 84 (28.1) | |
 At least once a day | 95 (31.7) | 215 (71.9) |