| | Total | of which by age: |
| under 1,5 year | 1,5-3 years | 4-6 years | 7 years | 8-10 years | 11-14 years |
| Deaf children | 920 | 7 | 50 | 166 | 100 | 262 | 335 |
| Weakly hearing children and who later had become deaf | 1977 | 20 | 118 | 337 | 260 | 603 | 639 |
| Blind children | 289 | 4 | 22 | 46 | 29 | 67 | 121 |
| Poor eyesight | 10861 | 38 | 314 | 901 | 984 | 2771 | 5853 |
| Children with mental defect | 6187 | 57 | 261 | 824 | 947 | 1971 | 2127 |
| Children with disturbances of speech | 5040 | 46 | 457 | 1375 | 881 | 1184 | 1097 |
| Poliomyelitis and cerebral palsy | 2659 | 62 | 234 | 551 | 327 | 655 | 830 |
| Scoliosis (spinal curvature) | 2341 | 9 | 39 | 176 | 253 | 701 | 1163 |