Article

OBJECTIVES: To develop and validate a new self-report outcome measure named the
Vestibular Activities and Participation (VAP) for people with vestibular
disorders to examine their activities and participation according to the
International Classification of Functioning Disability and Health. DESIGN: Delphi
iterative survey for the development of the VAP and validation study. SETTING:
Tertiary balance clinic. PARTICIPANTS: A panel of worldwide experts (n=17) in
vestibular dysfunction participated in the development of the VAP, and patients
(N=58) with vestibular disorders were enrolled in the validation of the VAP.
INTERVENTION: Not applicable. MAIN OUTCOME MEASURES: For the development of the
VAP, an Internet-based survey of 55 activities and participation items was
presented to the panel of experts and the percentage agreement per item was
calculated. For the validation of the VAP, the VAP was completed twice to examine
the test-retest reliability, the World Health Organization Disability Assessment
Schedule II (WHODAS II) was used to examine the concurrent validity with the VAP,
and the Dizziness Handicap Inventory (DHI) was used to examine the convergent
validity of the VAP. RESULTS: After 2 rounds of the Delphi technique, the VAP was
developed. The VAP total score had excellent test-retest reliability (intraclass
correlation coefficient=.95; confidence interval=.91-.97) and good to excellent
agreement per item indicated by the unweighted kappa (.41-.80) and the weighted
kappa (.58-.94). The minimum detectable change at 95% confidence level of the VAP
score was .58. The VAP had strong correlation (rho=.70; P<.05) with the WHODAS II
and moderate to strong correlations (rho=.54-.74) with the DHI subscale and total
scores. After adjustment for age, we found sex and self-reported imbalance to be
independent explanatory variables of the transformed VAP total score.
CONCLUSIONS: The VAP measure was developed to examine the disabling effect of
vestibular disorders on people's activities and participation based on a
standardized framework (the International Classification of Functioning
Disability and Health). The VAP demonstrated excellent reliability and was
validated with external instruments in people with vestibular disorders.
CI - Copyright (c) 2012 American Congress of Rehabilitation Medicine. Published by
Elsevier Inc. All rights reserved.

Langue : ANGLAIS