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Degree of hearing loss classification based on the hearing threshold.
| Degree of Hearing Loss Tone Average | Hearing Loss range(dB HL) |
|---|---|
| Normal | -10 to 15 |
| Slight | 16 to 25 |
| Mild | 26 to 40 |
| Moderate | 41 to 55 |
| Moderately severe | 56 to 70 |
| Severe | 71 to 90 |
| Profound | 91 to equipment limits |
