Table 1

Demographic data

N=458%
Sex
Male22048.03
Female20344.32
No data357.64
Age
Infants and toddlers (<4 years)449.61
Preschool children (4–7 years)7917.25
Early school children (8–12 years)5211.35
Adolescents (13–18 years)408.73
Adults (>18 years)21146.07
No data326.99
The onset of hearing loss
Prelingual hearing loss21045.85
Postlingual hearing loss15233.19
No data9620.96
Type of deafness
Bilateral deafness458100
Unilateral deafness00
Causes of hearing loss
CongenitalN=241
Idiopathic12551.87
Inner ear anomalies124.98
Genetic disorder72.90
Intrauterine infection52.07
Birth asphyxia41.66
Ototoxicity10.41
Others52.07
No data8234.02
AcquiredN=181
Idiopathic6737.02
Post meningitis6334.81
Chronic otitis media or cholesteatoma105.52
Sepsis42.21
Ototoxicity31.66
Trauma31.66
Head injury31.66
Noise-induced or noise trauma21.10
Autoimmune hearing loss10.55
Others1910.50
No data63.31