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. 2011 Jul 14;37:33. doi: 10.1186/1824-7288-37-33

Table 1.

Degree of hearing impairment

Degree of hearing loss Hearing loss range (dB)
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+