The distortion product OAEs are shown. The background noise levels, particularly at 2500 Hz and below, are very high.  It is surprising that a response is seen, and it increases the possibility of false positive results.

• Given the data shown, where are the OAEs considered present?  Again, the criterion is 6 dB SNR and OAE above -5 dB SPL. The OAE must be 6 dB above the measured noise level, and should be above the upper limit of the estimate of what the noise might be – that is, above 2 standard deviations of the mean noise measured, which is shown as the light blue color.  You’ll have to generalize a bit.

• Are the findings of the transient and distortion product OAE testing consistent with each other?