| Study | BC Threshold used to label SNHL | Incidence of SNHL in CSOM |
| Paparella et al. | 15 Db | 43% |
| Sharma et al. | 25 dB | 9.4% |
| Levine et al. | 25 dB | 12% |
| Mohsin et al. | 25 dB | 15.09% |
| Viswanatha et al. | 25 dB | 16.05% |
| Kaur et al. | 25 dB | 24% |
| Paparella et al. | 30 dB | 16% |
| Azevedo et al. | 30 dB | 13% |
| Present Study | 25 dB | 19% |