Fig. 7.

Scatterplot of 0-dB QuickSIN scores by standardized residuals of auditory steady-state response (ASSR) amplitude at all 3 modulation depths. The x-axis is the standardized residuals of ASSR amplitudes after controlling for pure-tone thresholds from 2 to 4 kHz. Each symbol represents data from a single participant. Closed triangles indicate younger participants, and open circles indicate older participants. Zero-inflated beta regressions were implemented within a GAMLSS framework that separately models QuickSIN scores equal to 0 and QuickSIN scores between 0 and 1. P values indicate significance of regression coefficient estimates. *0-dB QuickSIN scores are significantly predicted by ASSR amplitude only at an amplitude modulation depth of −8 dB, after controlling for multiple comparisons and calculation of 95% confidence intervals.