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Table 5 Pre- and posttreatment acoustic parameters assessment in LPR patient groups (patients with roughness vs. patients without roughness; mean and inter-quartile values)

From: Impact of laryngopharyngeal reflux on subjective and objective voice assessments: a prospective study

   

Patients with roughness (n = 15)

A. Parameters

ULNR♯

pretreatment

posttreatment

Z

p-value*

STD

2.04

3.94 ± 2.14

2.76 ± 1.48

−1.14

0.258

vF0

1.10

2.32 ± 1.13

1.74 ± 0.88

−0.97

0.334

Jitt

0.61

1.60 ± 1.17

1.02 ± 0.75

−1.36

0.173

RAP

0.36

0.92 ± 0.67

0.59 ± 0.50

−1.59

0.112

PPQ

0.35

0.91 ± 0.72

0.61 ± 0.40

−1.36

0.173

PFR

2.17

3.67 ± 2.00

2.73 ± 1.00

−1.48

0.358

Shim

2.26

6.06 ± 4.23

4.03 ± 2.78

−2.78

0.005

APQ

1.69

5.27 ± 3.85

3.44 ± 2.17

−2.33

0.020

vAm

9.23

15.73 ± 8.62

12.84 ± 4.14

−1.02

0.307

NHR

0.12

0.14 ± 0.04

0.13 ± 0.04

−1.25

0.211

  1. *Wilcoxon matched-pairs signed-ranks test; Acoustic parameters (A. parameters), Jitter percent (Jitt), Relative Average Perturbation (RAP), Pitch Perturbation Quotient (PPQ), Fundamental frequency variation (vF0), Shimmer percent (Shim), Amplitude Perturbation Quotient (APQ), Peak-to-Peak Amplitude Variation (vAm), and Noise Harmonic Ratio (NHR). ULNR: Upper Limit of N Range, ♯ = based on the MDVP norms
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Journal of Otolaryngology - Head & Neck Surgery

ISSN: 1916-0216

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