Prevalence of intellectual disabilities by age group
| Age in years | All children/young people n=916 331 n | Children/young people with intellectual disabilities n=5234 n (%) | ||||
| Male n=469 106 | Female n=447 225 | Total n=916 331 | Male n=3253 | Female n=1981 | Total n=5234 | |
| 0 | 29 892 | 28 823 | 58 715 | 53 (0.2) | 69 (0.2) | 122 (0.2) |
| 1 | 30 368 | 29 188 | 59 556 | 95 (0.3) | 74 (0.3) | 169 (0.3) |
| 2 | 29 973 | 28 936 | 58 909 | 101 (0.3) | 85 (0.3) | 186 (0.3) |
| 3 | 30 029 | 28 735 | 58 764 | 135 (0.4) | 89 (0.3) | 224 (0.4) |
| 4 | 28 962 | 27 915 | 56 877 | 166 (0.6) | 97 (0.3) | 263 (0.5) |
| 5 | 28 314 | 26 910 | 55 224 | 216 (0.8) | 110 (0.4) | 326 (0.6) |
| 6 | 28 364 | 26 872 | 55 236 | 195 (0.7) | 111 (0.4) | 306 (0.6) |
| 7 | 27 614 | 26 172 | 53 786 | 207 (0.8) | 125 (0.5) | 332 (0.6) |
| 8 | 26 660 | 25 665 | 52 325 | 210 (0.8) | 116 (0.5) | 326 (0.6) |
| 9 | 27 024 | 26 022 | 53 046 | 219 (0.8) | 138 (0.5) | 357 (0.7) |
| 10 | 28 117 | 26 950 | 55 067 | 260 (0.9) | 147 (0.5) | 407 (0.7) |
| 11 | 29 070 | 27 699 | 56 769 | 253 (0.9) | 156 (0.6) | 409 (0.7) |
| 12 | 30 244 | 28 412 | 58 656 | 248 (0.8) | 165 (0.6) | 413 (0.7) |
| 13 | 30 618 | 29 353 | 59 971 | 306 (1.0) | 173 (0.6) | 479 (0.8) |
| 14 | 31 566 | 29 586 | 61 152 | 291 (0.9) | 161 (0.5) | 452 (0.7) |
| 15 | 32 291 | 29 987 | 62 278 | 298 (0.9) | 165 (0.6) | 463 (0.7) |