Fig. 8
From: Large-scale music events can cause subclinical hearing damage
Individual changes in 4-kHz EFR strength on day 1 post-exposure, presented as a function of total exposure level: non-HPD-compenstated LAeq (A), LZeq,63 Hz (B), and LCpeak (C). Gray and white symbols denote non-protected and protected festival attendees, respectively. The shaded area represents the 95% confidence intervals (CIs) from a test–retest study50, while dashed lines delineate the overall CI, capturing the average range alongside the 95% CI at each individual data point, derived from individual standard deviations obtained through a resampling bootstrapping method49.
