Table 2 Comparison of mean values in sound parameters between PD and control patients.

178.64 ± 89.33

169.48 ± 70.82

1.012

0.312

168.92 ± 83.82

153.63 ± 74.62

1.747

0.082

186.59 ± 91.92

174.54 ± 76.67

1.026

0.306

173.88 ± 84.72

167.17 ± 78.93

0.610

0.543

179.40 ± 94.64

179.62 ± 84.26

− 0.015

0.988

175.35 ± 86.75

165.94 ± 83.08

0.715

0.475

170.29 ± 23.13*

164.81 ± 23.83*

2.035

0.043

165.8 ± 24.57

167.62 ± 20.55

− 0.728

0.467

169.27 ± 22.44

166.22 ± 23.87

0.929

0.354

168.13 ± 20.36

168.68 ± 21.3

− 0.200

0.842

172.65 ± 22.98

171.04 ± 23.5

0.423

0.673

167.92 ± 18.68

172.84 ± 21.34

− 1.596

0.112

163.85 ± 81.68

166.96 ± 78.15

− 0.341

0.733

172.75 ± 81.78

168.26 ± 85.88

0.489

0.625

167.43 ± 71.58

170.83 ± 82.39

− 0.31

0.757

172.58 ± 68.59

185.4 ± 71.9

− 1.364

0.174

175.67 ± 65.49

180.34 ± 78.23

− 0.391

0.697

184.87 ± 82.95

181.67 ± 67.19

0.271

0.786

50.24 ± 0.50

50.24 ± 0.51

0.082

0.935

50.20 ± 0.52*

50.09 ± 0.23*

2.437

0.015

50.15 ± 0.35*

50.31 ± 0.53*

− 2.402

0.017

50.25 ± 0.64*

50.09 ± 0.20*

2.464

0.014

50.38 ± 0.73*

50.18 ± 0.33*

2.210

0.029

50.24 ± 0.60

50.12 ± 0.30

1.589

0.114

395.18 ± 12.38*

389.27 ± 17.51*

3.327

0.001

388.81 ± 21.00*

393.80 ± 11.04*

− 2.653

0.008

393.91 ± 12.50*

386.73 ± 17.90*

3.216

0.002

390.89 ± 16.34

391.34 ± 14.22

− 0.222

0.825

397.76 ± 7.32*

390.92 ± 15.82*

3.218

0.002

395.40 ± 10.99

393.67 ± 12.36

0.959

0.339

246.33 ± 102.11

244.25 ± 98.7

0.182

0.856

239.21 ± 95.14*

273.15 ± 90.38*

− 3.325

0.001

243.06 ± 100.86

247.46 ± 100.88

− 0.310

0.757

241.52 ± 100.82*

268.31 ± 97.19*

− 2.017

0.045

232.86 ± 93.12

248.65 ± 106.8

− 0.953

0.342

252.59 ± 87.49

277.14 ± 92.6

− 1.766

0.079

− 104,311.52 ± 396,649.63

− 92,991.59 ± 258,141.83

− 0.301

0.764

− 65,088.06 ± 174,637.86

− 103,680.7 ± 402,912.44

1.159

0.247

− 189,942.18 ± 565,674.53

− 311,437.95 ± 920,745.92

1.083

0.280

− 182,311.76 ± 748,104.78

− 95,433.15 ± 274,063.43

− 1.115

0.266

− 94,861.61 ± 388,677.88

− 162,047.38 ± 432,150.88

0.991

0.323

− 79,175.53 ± 324,979.16

− 55,075.06 ± 171,983.45

− 0.584

0.560

− 5,132.11 ± 469,415.76

− 10,348.38 ± 242,847.61

0.127

0.899

− 42,172.1 ± 325,913.7*

32,581.48 ± 338,176.18*

− 2.034

0.043

5,179.32 ± 54,268.93

45,252.06 ± 377,235.86

− 0.972

0.332

− 33,834.21 ± 980,782.41

10,345.3 ± 72,610.16

− 0.458

0.647

25,357.42 ± 197,497.6

424.63 ± 27,987.22

1.176

0.241

95,398.45 ± 838,470.75

4,385.96 ± 50,836.81

0.951

0.343

157.99 ± 30.27

158.4 ± 37.09

− 0.105

0.917

155.72 ± 37.01

159.53 ± 41.65

− 0.885

0.377

154.37 ± 25.56

161.57 ± 34.27

− 1.654

0.100

160.2 ± 31.1

167.9 ± 38.21

− 1.663

0.098

156.52 ± 31.76

166.57 ± 34.01

− 1.859

0.065

157.52 ± 30.64*

170.76 ± 37.14*

− 2.531

0.012

5.80 ± 0.77

5.67 ± 0.59

1.775

0.077

5.79 ± 0.96

5.96 ± 0.69

− 1.844

0.066

6.24 ± 0.61*

5.90 ± 0.63*

3.897

0.000

6.15 ± 1.06

6.39 ± 0.82

− 1.916

0.057

6.34 ± 1.15*

5.98 ± 0.93*

2.095

0.038

6.33 ± 1.34

6.29 ± 1.17

0.162

0.871

− 5.93 ± 2.65

− 5.63 ± 2.64

− 0.976

0.330

− 5.81 ± 2.55

− 5.57 ± 2.92

− 0.794

0.428

− 5.92 ± 3.25

− 5.09 ± 3.41

− 1.779

0.077

− 5.38 ± 2.83

− 5.66 ± 2.39

0.792

0.429

− 5.51 ± 2.93

− 5.39 ± 3.05

− 0.247

0.805

− 5.61 ± 2.70

− 5.63 ± 2.85

0.048

0.962

2.62E−03 ± 5.44E−04

2.51E−03 ± 4.46E−04

1.886

0.060

2.65E−03 ± 5.71E−04

2.68E−03 ± 3.82E−04

− 0.579

0.563

2.55E−03 ± 5.61E−04*

2.36E−03 ± 4.37E−04*

2.637

0.009

2.48E−03 ± 5.02E−04

2.48E−03 ± 3.23E−04

0.031

0.975

2.54E−03 ± 5.93E−04

2.44E−03 ± 5.25E−04

1.045

0.298

2.58E−03 ± 5.03E−04

2.53E−03 ± 4.56E−04

0.722

0.472