Clinical characteristics of the participants.

<p>Data are expressed as numbers (percentages) for categorical variables and mean ± standard deviation for continuous variables.</p><p>*<i>P</i> values between males and females were tested using the <i>t</i>-test for continuous variables and the Pearson χ² test or Fisher exact test for categorical variables.</p><p>Abbreviations: HDL, high-density lipoprotein; MetS, metabolic syndrome; Low-Freq, low frequency; Mid-Freq, mid-frequency; High-Freq, high-frequency; dB, decibel.</p><p>Clinical characteristics of the participants.