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Figure 2. Average age corrected audiogram. Correction based on median values from ISO 7029 applied to the individual person. O = right ear. X = left ear. Dashed curves: plus and minus one standard deviation.

Figure 2. Average age corrected audiogram. Correction based on median values from ISO 7029 applied
to the individual person. O = right ear. X = left ear. Dashed curves: plus and minus one standard
deviation.