Age group | Total No. | Normal hearing (Bilateral) | SNHL (no) | Age group Prevalence (%) |
20 - 29 | 29 | 27 | 2 | 6.9 |
30 - 39 | 15 | 13 | 2 | 13.3 |
40 - 49 | 30 | 24 | 6 | 20.0 |
50 - 59 | 30 | 20 | 10 | 33.3 |
60 - 69 | 62 | 17 | 45 | 72.6 |
70 - 79 | 24 | 2 | 22 | 91.0 |
Total | 190 | 103 | 87 |
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