Table 3 Prevalence of sensory losses in the population of children screened at preschools (n = 10,390)
Characteristics | All losses % (n) | Bilateral % (n) | Unilateral % (n) |
|---|---|---|---|
Hearing Loss | |||
 No signs of external or middle ear abnormality | 1.0% (104/10390) | 0.6% (67/10390) | 0.4% (37/10390) |
 External or middle ear abnormality | 1.3% (136/10390) | 0.8% (88/10390) | 0.5% (48/10390) |
 All hearing losses | 2.3% (240/10390) | 1.5% (155/10390) | 0.8% (85/10390) |
Degree of HL according to the worst ear | |||
 Mild (25–40 dB HL) | 1.3% (132/10390) | 0.8% (84/10390) | 0.5% (48/10390) |
 Moderate (41–60 dB HL) | 0.8% (86/10390) | 0.5% (57/10390) | 0.3% (29/10390) |
 Severe (61–80 dB HL) | 0.1% (11/10390) | 0.02% (3/10390) | 0.08% (8/10390) |
 Profound (81 dB HL or greater) | 0.1% (11/10390) | 0.1% (11/10390) | 0 |
Vision Loss | |||
 All vision losses | 2.2% (232/10390) | 1.3% (137/10390) | 0.9% (95/10390) |
Degree of VL according to the worst eye | |||
 Mild (0.4 LogMar) | 0.1% (11/10390) | 0.1% (11/10390) | 0 |
 Moderate (0.5–0.9 LogMar) | 0.9% (89/10390) | 0.5% (50/10390) | 0.4% (39/10390) |
 Severe (1–4 LogMar) | 0.2% (18/10390) | 0.1% (12/10390) | 0.1% (6/10390) |
 No Response (5 LogMar) | 1.1% (114/10390) | 0.6% (64/10390) | 0.5% (50/10390) |