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Table 1: Overview of regression models for (a) DPOAE and (b) TEOAE shifts. The model "Base" models the OAE shift as a function of ear, gender, and frequency; the variables music exposure (LAeq), earplug type (HPD), and the music exposure corrected with the earplugs' APV (LAeqA) were added subsequently to this baseline model. For each of the added variables, the AIC values of the new model and the baseline model were compared (Comp) using chi-square statistics and the associated chi-square value (Chisq), degrees of freedom (Chi df), and P value were tabulated per comparison

Table 1: Overview of regression models for (a) DPOAE and (b) TEOAE shifts. The model P value were tabulated per comparison">