Comparisons of 4-Point GRBAS, 7-Point-GRBAS, and CAPE-V for Auditory Perceptual Evaluation of Dysphonia

Purpose: The GRBAS (grade, roughness, breathiness, asthenia, strain) scale, a 4-point has been most widely used for judging auditory-perceptual severity dysphonia. However, in current clinical practice, sometimes more fragmented 0.5 scheme is being if the original scale ambiguous to assess. Thus, aim of present study was compare dysphonia using three evaluation tools, 4-point, 7-point and CAPEV provide information regarding differentiation perceptual acoustic correlations.Methods: Voice samples sustained vowel connected speech were obtained from 101 dysphonic patients. Auditory-perceptual assessments performed by two certified experienced speech-language pathologists specializing voice disorders grade GRBAS, OS CAPE-V also compared with cepstral measures [cepstrum peak prominence (CPP), low/high spectral ratio].Results: G inter-rater reliability scales good (ICC > 0.800) while less strong 0.681) than scale. highest correlation CPP both speech, L/H ratio showed low severity. differed significantly scales. On only difference between G1-G2, G2-G3 groups /a/ vowel, whereas G0-G1, relatively differentiated. Meanwhile, on differences G1.5-G2 no G0-G0.5, G0.5-G1, G1-G1.5, G2-G2.5, G2.5-G3 respectively speech.Conclusion: higher but reduced discrimination Consequently, modified could be useful as clinically-perceptual tool, along CAPE-V.