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Figure 1: Comparison between frequency-specifi c HLs obtained with the InternetAudio test, self-administered at home, and those yielded on professionally conducted clinical pure-tone audiometry in 12 volunteering participants. Box plot of the distributions of intraindividual differences in hearing levels (dB — Y axis), frequency by frequency (kHz — X axis). ◊ = Mean, bold line = Median, bottom of box = First quartile, top of box = Third quartile, whiskers = Range + = Outliers

Figure 1: Comparison between frequency-specifi c HLs obtained with the InternetAudio test, self-administered at home, and those yielded on professionally conducted clinical pure-tone audiometry in 12 volunteering participants. Box plot of the distributions of intraindividual differences in hearing levels (dB — Y axis), frequency by frequency (kHz — X axis). ◊ = Mean, bold line = Median, bottom of box = First quartile, top of box = Third quartile, whiskers = Range + = Outliers