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Figure 3. Incidence of absence of DPOAEs and CEOAEs in subjects with normal audiogram with or without a history of noise exposure. In all groups, as the frequency increases, the absence rate increases - more pronounced in the noise-exposed subjects.

Figure 3. Incidence of absence of DPOAEs and CEOAEs in
subjects with normal audiogram with or without a history of noise exposure. In all groups, as the frequency increases, the absence rate increases - more pronounced in the noise-exposed subjects.