Table 1 Prevalence rate of different anomalies in the sample and in four sub-groups
Whole SAMPLE | 8 year–old group | 9 year–old group | 10 year–old group | 11–12 year–old group | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
Prevalence n. (%) | M | Prevalence n. (%) | M | Prevalence n. (%) | M | Prevalence n. (%) | M | Prevalence n. (%) | M | |
F | F | F | F | F | ||||||
DMC | 352 (7.5%) | M = 173 | 116 (6.3%) | M = 62 | 89 (7.8%) | M = 46 | 79 (8.8%) | M = 35 | 68 (8.3%) | M = 30 |
F = 179 | F = 54 | F = 43 | F = 44 | F = 38 | ||||||
H | 335 (7.1%) | M = 168 | 118 (6.4%) | M = 59 | 96 (8.4%) | M = 51 | 54 (6,0%) | M = 28 | 67 (8.2%) | M = 30 |
F = 167 | F = 59 | F = 45 | F = 26 | F = 37 | ||||||
IT | 185 (3.9%) | M = 87 | 72 (3.9%) | M = 35 | 40 (3.5%) | M = 19 | 39 (4.4%) | M = 17 | 34 (4.2%) | M = 16 |
F = 98 | F = 37 | F = 21 | F = 22 | F = 18 | ||||||
TA | 131 (2.8%) | M = 79 | 49 (2.6%) | M = 32 | 31 (2.7%) | M = 19 | 24 (2.7%) | M = 12 | 27 (3.3%) | M = 16 |
F = 52 | F = 17 | F = 12 | F = 12 | F = 11 | ||||||
TT | 67 (1.4%) | M = 39 | 34 (1.8%) | M = 19 | 12 (1.1%) | M = 7 | 8 (0.9%) | M = 4 | 13 (1.6%) | M = 9 |
F = 28 | F = 15 | F = 5 | F = 4 | F = 4 | ||||||
ST | 43 (0.9%) | M = 25 | 13 (0.7%) | M = 6 | 13 (1.1%) | M = 8 | 8 (0.9%) | M = 4 | 9 (1.1%) | M = 7 |
F = 18 | F = 7 | F = 5 | F = 4 | F = 2 | ||||||
O | 30 (0.6%) | M = 13 | 13 (0.7%) | M = 7 | 7 (0.6%) | M = 2 | 5 (0.6%) | M = 2 | 5 (0.6%) | M = 2 |
F = 17 | F = 6 | F = 5 | F = 3 | F = 3 | ||||||
T | 2 (0.04%) | M = 1 | 1 (0.1%) | M = 1 | 0 | M = 0 | 0 | M = 0 | 1 (0.1%) | M = 0 |
F = 1 | F = 0 | F = 0 | F = 0 | F = 1 | ||||||