Table 2 Characteristics of hearing loss
Character | No. (450) | (%) |
|---|---|---|
Diagnosis of hearing loss | ||
 Conventional audiometry | 210 | 46.7 |
 Play audiometry | 140 | 31.3 |
 Evoked audiometry (ABR, ASSR) | 100 | 22.2 |
Type of hearing loss | ||
 Mixed HL (ABG at 500, 1000 Hz) | 70 | 15.6 |
 SNHL | 380 | 84.4 |
Degree of SNHL | ||
 Mild SNHL | 10 | 2.2 |
 Moderate SNHL | 90 | 20 |
 Moderately severe SNHL | 110 | 24.4 |
 Severe SNHL | 90 | 20 |
 Profound SNHL | 80 | 17.8 |
Degree of MHL | ||
 Moderate MHL | 12 | 2.7 |
 Moderately severe MHL | 22 | 4.9 |
 Severe MHL | 28 | 6.2 |
 Profound MHL | 8 | 1.8 |
Symmetry of SNHL | ||
 Symmetrical | 270 | 60 |
 Asymmetrical | 180 | 40 |
Course of hearing loss | ||
 Stationary | 240 | 53.3 |
 Progressive | 115 | 25.6 |
 Fluctuant | 86 | 19.1 |
 Sudden SNHL | 9 | 2 |