Table 4 Correlation between clinical severity of PD and acoustic parameters.

From: Author Correction: The physical significance of acoustic parameters and its clinical significance of dysarthria in Parkinson’s disease

Acoustic parameters

Syllable

H&Y

UPDRS III

VHI-30

R

P

R

P

R

P

Start f0 (Hz)

Single

0.0363

0.5083

0.0734

0.1809

− 0.0134

0.8070

Double

− 0.0080

0.9049

0.0934

0.1637

0.0186

0.7817

Multiple

0.0533

0.4930

− 0.0274

0.7246

− 0.0307

0.6929

Mean f0 (Hz)

Single

0.0878

0.1092

0.0557

0.3104

− 0.2435*

0.0000*

Double

− 0.0382

0.5693

0.0738

0.2712

− 0.2198*

0.0009*

Multiple

− 0.0513

0.5089

0.0425

0.5847

− 0.0778

0.3163

Mid f0 (Hz)

Single

0.0264

0.6311

0.0760

0.1661

− 0.0422

0.4425

Double

0.0396

0.5557

0.0464

0.4897

− 0.1512*

0.0236*

Multiple

− 0.0678

0.3822

− 0.0564

0.4675

− 0.1295

0.0944

Min f0 (Hz)

Single

0.0022

0.9686

0.0600

0.2742

− 0.0725

0.1861

Double

0.0119

0.8593

0.0752

0.2623

− 0.0626

0.3510

Multiple

− 0.0043

0.9561

0.1034

0.1823

− 0.1038

0.1805

Max f0 (Hz)

Single

0.0357

0.5152

− 0.0102

0.8521

− 0.1485*

0.0066*

Double

− 0.0540

0.4211

− 0.0563

0.4015

− 0.1444*

0.0308*

Multiple

0.0776

0.3174

0.1400

0.0702

− 0.0985

0.2038

End f0 (Hz)

Single

− 0.0368

0.5028

− 0.0914

0.0955

− 0.0835

0.1276

Double

− 0.1361*

0.0419*

− 0.1021

0.1276

− 0.0976

0.1456

Multiple

− 0.1744*

0.0238*

− 0.1175

0.1294

0.0262

0.7364

Slope M-E (Hz/s)

Single

− 0.1083

0.0514

0.0051*

0.0032*

− 0.1576*

0.0045*

Double

− 0.1078

0.1099

− 0.0783

0.2462

− 0.1429*

0.0337*

Multiple

− 0.1245

0.1089

− 0.0602

0.4398

− 0.1244

0.1093

Slope S-M (Hz/s)

Single

0.0757

0.1686

0.0051

0.9264

− 0.0988

0.0723

Double

− 0.0110

0.8705

− 0.0335

0.6188

0.0679

0.3130

Multiple

0.0656

0.4008

0.0951

0.2227

− 0.0195

0.8029

Median f0 (Hz)

Single

0.1864*

0.0006*

0.1467*

0.0072*

− 0.2046*

0.0002*

Double

0.0073

0.9138

0.1024

0.1266

− 0.2114*

0.0015*

Multiple

0.0138

0.8591

0.0659

0.3957

− 0.1925*

0.0124*

Duration (seconds)

Single

0.1839*

0.0007*

0.2111*

0.0001*

0.0035

0.9498

Double

0.0744

0.2674

0.0846

0.2070

0.0593

0.3774

Multiple

0.1342

0.0829

0.0834

0.2824

0.0544

0.4840

HNR (Hz)

Single

− 0.0057

0.9179

− 0.0607

0.2690

0.0113

0.8373

Double

0.0289

0.6665

0.0564

0.4007

0.0360

0.5922

Multiple

− 0.0966

0.2130

− 0.1820*

0.0182*

− 0.0465

0.5495

Jitter

Single

− 0.1686*

0.0020*

− 0.0373

0.4967

− 0.1150*

0.0357*

Double

− 0.0609

0.3646

− 0.1048

0.1177

− 0.0995

0.1377

Multiple

0.0402

0.6045

− 0.0316

0.6846

− 0.2080*

0.0068*

  1. Spearman analysis, *P < 0.05.