Test-retest study of the GRBAS scale: influence of experience and professional background on perceptual rating of voice quality.
Perceptual evaluation was performed by means of the GRBAS scale for a series of nine pathological voice samples that were presented twice to a group of 23 judges, consisting of experienced and inexperienced otolaryngologists (ENTs) and speech-language pathologists (S/LPs). The time interval between ratings was 14 days. Test-retest reliability was moderate. The best agreement between the observers was obtained for the G (grade) parameter and the worst for the S (strained) parameter. Considering the medians of the GRBAS ratings, no significant influence was measured for level of experience or professional background. Yet, based on means, the results show that professional background has a greater impact on perceptual rating than experience.
De Bodt
M S
MS
Department of Otolaryngology, Head and Neck Surgery, University Hospital, Belgium.
Wuyts
F L
FL
Van de Heyning
P H
PH
Croux
C
C
D000328:Adult; D000368:Aged; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D015588:Observer Variation; D015203:Reproducibility of Results; D013067:Speech Perception; D014833:Voice Quality