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The prevalence (%) of hearing impairment (dB hearing threshold level averaged over the frequencies 0.5, 1,2 and 4 kHz) exceeding > 25 dB, > 30 dB, > 35 dB, > 40 dB, > 45 dB, > 65 dB for the better ear, and for the worse ear for each age group for a) males, b) females, and c) for the total sample (overall genders and age groups).

The prevalence (%) of hearing impairment (dB hearing threshold level averaged over the frequencies 0.5, 1,2 and 4 kHz) exceeding > 25 dB, > 30 dB, > 35 dB, > 40 dB, > 45 dB, > 65 dB for the better ear, and for the worse ear for each age group for a) males, b) females, and c) for the total sample (overall genders and age groups).