Clinical Study
A Prevalence Study of Hearing Loss among Primary School Children in the South East of Iran
Table 3
Frequency distribution of conductive hearing loss based on grade.
| | Conductive hearing loss | Grade | | | 1st grade | 2nd grade | 3rd grade | 4th grade | 5th grade | Total | | Fr. | Percent | Fr. | Percent | Fr. | Percent | Fr. | Percent | Fr. | Percent | Fr. | Percent |
| | Yes | 30 | 11% | 25 | 9% | 20 | 7.3% | 20 | 7.3% | 14 | 5% | 109 | 88.4% | | No | 243 | 89% | 252 | 91% | 253 | 92.7% | 254 | 92.7% | 268 | 95% | 1270 | 2.7% |
| | Total | 273 | 100% | 277 | 100% | 273 | 100% | 274 | 100% | 282 | 100% | 1379 | 100% |
|
|
