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Figure 9: Comparison of post-preexposure OAE shift between earplug types (1 to 5) for DPOAE (a) and TEOAE (b) Per earplug device, the mean shift is shown with error bars spanning the mean ±1 standard error. Between the earplug types, significant Tukey's post hoc comparisons are indicated by ***for P < 0.001, **for P < 0.01, and *P < 0.05 (a) DPOAE shift per earplug type (b) TEOAE shifts per earplug type

Figure 9: Comparison of post-preexposure OAE shift between earplug types (1 to 5) for DPOAE (a) and TEOAE (b) Per earplug device, the mean shift is shown with error bars spanning the mean ±1 standard error. Between the earplug types, significant Tukey's <i>post hoc</i> comparisons are indicated by ***for <i>P</i> < 0.001, **for <i>P</i> < 0.01, and *<i>P</i> < 0.05 (a) DPOAE shift per earplug type (b) TEOAE shifts per earplug type