Results of voice analyses in PreHD individuals and appropriate controls.

*p**p†Cohen's d: Effect size 0.8 is considered large, 0.5 is considered medium, and 0.2 is considered small.MPT = maximum phonation time; FOVB = first occurrence of voice break; NVB = number of voice breaks; DPB = degree of pitch breaks; DVA = degree of vocal arrests; F0 SD = variability of fundamental frequency; RPDE = recurrence period density entropy; HNR = harmonics-to-noise ratio; DFA = detrended fluctuation analysis; FTRI = frequency tremor intensity index; ATRI = amplitude tremor intensity index; MFCC = Mel-frequency cepstral coefficients; ΔMFCC = delta Mel-frequency cepstral coefficients.Results of voice analyses in PreHD individuals and appropriate controls.