Article

Scaling voice activity limitation and participation restriction in dysphonic individuals.

Voice Research Laboratory and Centre for Communication Disorders, Division of Speech and Hearing Sciences, The University of Hong Kong, Hong Kong, SAR, China.
Folia Phoniatrica et Logopaedica (impact factor: 1.12). 02/2007; 59(2):74-82. DOI:10.1159/000098340 pp.74-82
Source: PubMed

ABSTRACT The purpose of this study was to determine the most appropriate scaling procedure for evaluating voice activity limitation (AL) and voice participation restriction (PR). In a randomly counterbalanced design, 32 dysphonic individuals rated their self-perceived extents of voice AL and PR using two scaling procedures [equal-appearing interval (EAI) scaling and visual analogue (VA) scaling]. Results revealed that test-retest reliabilities were similar for the two scaling procedures. The overall extents of voice AL and PR obtained from the two scaling procedures were similar. Moreover, the significant linear relationships obtained between the EAI and VA data of voice AL and PR suggest both dimensions as metathetic in nature. Therefore, either EAI or VA scaling procedure would be considered as appropriate for rating voice AL and PR. However, the relative ease to use by consumers favours the choice of EAI over VA scaling procedure for evaluating voice AL and PR.

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Keywords

32 dysphonic individuals
 
AL
 
appropriate scaling procedure
 
dimensions
 
EAI
 
extents
 
randomly counterbalanced design
 
rating voice AL
 
scaling procedures [equal-appearing interval
 
self-perceived extents
 
significant linear relationships
 
test-retest reliabilities
 
two scaling procedures
 
VA scaling procedure
 
visual analogue
 
voice activity limitation
 
voice AL
 
voice participation restriction