Results of voice analyses in PreHD individuals and appropriate controls.

*p<0.01;
**p<0.001.
†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.