ORIGINAL ARTICLE
Commun Sci Disord. 2018;23(1): 228-241.
Published online March 31, 2018.
doi: https://doi.org/10.12963/csd.17453
Comparison between Self-reported and Objective Measures on Speech Characteristics in Patients with Parkinson’s Disease
Hyeon Ah Kima , Sun Woo Kimb , and Ji Hye Yoonc
aDepartment of Speech Pathology, Graduate School of Health Sciences, Hallym University, Chuncheon, Korea
bDepartment of Speech-Language Habilitation, Daelim University College, Anyang, Korea
cDivision of Speech Pathology and Audiology, Hallym University, Chuncheon, Korea
Corresponding Author: Ji Hye Yoon ,Tel: +82-33-248-2224, Fax: +82-33-256-3420, Email: j.yoon@hallym.ac.kr
Received November 1, 2017  Revised: November 24, 2017   Accepted November 24, 2017
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ABSTRACT
Objectives
This study used a self-evaluation questionnaire survey on speech characteristics with patients with Parkinson’s disease, and investigated the correlation between the survey’s self-reported results and clinicians’ speech evaluations.
Methods
Forty patients with Parkinson’s disease were divided into an mild group and a moderate/severe group according to limb hypokinesia severity. Then, speech tasks of maximum phonation time, diadochokinesia, and paragraph reading were conducted, and the results were quantified using Computerized Speech Lab. In the self-report questionnaire, respondents were asked about the subjective difficulty they encountered during the stages of respiration, phonation, articulation, and prosody based on a 5-point Likert scale.
Results
First, shimmer, noise to harmonic ratio, and amplitude tremor intensity index in the maximum phonation time task, and the total repeat frequency of /pu/ and /putuku/, and /putuku/DDKsdp in the diadochokinesia task were significantly higher in the moderate/severe group; the total repeat frequency of /tu/ and /ku/ was significantly lower in the moderate/severe group; and the two groups showed no significant difference in the reading task. Second, the moderate/severe group complained of more difficulty in the self-reporting questionnaire. Third, speech evaluation measures and the questionnaire showed a correlation between voice-related diverse complaints and correct articulation and the speech evaluation measures in the mild group, while voice intensity or speech rate were correlated with speech evaluation measures in the moderate/severe group.
Conclusion
Speech difficulty indicators in patient groups may differ with Parkinson’s disease severity. This implies that self-recognition regarding speech characteristics should be considered in the intervention plan and prognosis establishment.
Keywords: Parkinson’s disease | Hypokinetic dysarthria | Instrumental evaluation | Auditoryperceptual evaluation | Self-evaluation scale
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