Types of hearing and visual difficulties
| Types of hearing and visual difficulties | Proportion of children with either hearing or visual difficulties (%) |
| Hearing difficulties | 261 (100) |
| Otitis media with effusion | 102 (39.1) |
| Otitis media with effusion and conductive hearing loss | 94 (36.0) |
| Conductive hearing loss | 65 (24.9) |
| Visual difficulties | 189 (100) |
| Amblyopia | 79 (41.8) |
| Strabismus | 56 (29.6) |
| Strabismus and amblyopia | 47 (24.9) |
| Reduced acuity with or without amblyopia and/or strabismus | 7 (3.7) |