Comparison of mean TBOAE thresholds (left) and CEOAE thresholds (right) for cases with SSOAEs (solid line) and without SSOAEs (dashed line).

<p>Measurements were made in half-octave bands for both, and for TBOAEs the stimulus frequency matched the centre frequency of the analysis band. Error bars indicate standard errors; asterisks mark statistically significant differences (*–<i>p</i><0.05).