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. Author manuscript; available in PMC: 2017 Sep 1.
Published in final edited form as: Ear Hear. 2016 Sep-Oct;37(5):603–614. doi: 10.1097/AUD.0000000000000319

Figure 6.

Figure 6

Correlations between the distortion OAE compression threshold at one I/O frequency (3696 Hz) and two variables: (A) age and (B) the average of audiometric thresholds at 0.5, 1 and 2 kHz. Correlations were conducted at all six test frequencies although only one example is displayed here. The increase of both age and audiometric thresholds are strongly related to elevated compression threshold at 3696 Hz and all others (not shown), confirming that these simple correlations cannot define the overlapping influence of these two predictors—age and hearing—on variance of the distortion OAE compression threshold.