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آزمون بالینی P-WAB-1
 

Reliability and Validity of Bedside Version of Persian WAB
(P-WAB-1)

Reza Nilipour - Abbas Pourshahbaz - Zahra Sadat Ghoreyshi

Abstract

Introduction:In this study, we reported the reliability and validity of Bedside version of
Persian WAB (P-WAB-1) adapted from Western Aphasia Battery (WAB-R)1,2. P-WAB-1
is a clinical linguistic measuring tool to determine severity and type of aphasia in brain
damaged patients based on Aphasia Quotient (AQ) as a functional measure. For the
purposes of a quick clinical screening of aphasia in Persian, we adapted the bedside version
of WAB-R to assess the performance of Persian aphasic patients.
Methods: The data we reported on adaptation, validity and reliability of P-WAB-1 are
based on faithful translation and criterion validity ratio (CVR) taken from the expert
panel and the performance of 60 consecutive brain damaged patients referred to different
university clinics for rehabilitation and 30 healthy subjects as norms and 40 age-matched
epileptic patients as the control group.
Results: Based on the results of this study, P-WAB-1 has internal consistency (a=0.71)
and test-retest reliability (r=.65 p<.oo1) and the subtests are sensitive enough to contribute
to Aphasia Quotient (AQ) as a functional measure of severity of aphasia in Iranian brain
damaged patients. Based on AQ results, our aphasic patients were classified into four
distinct groups of severity.
Discussion: P-WAB-1 is the first clinical linguistic test to determine severity of aphasia
based on an operational index and can be considered as a valid baseline for screening and
diagnosis of aphasia among Persian speaking brain damaged patients. This study is the
initial step on adaptation of different versions of WAB-R to measure the severity of aphasia
using AQ, LQ and CQ as operational measures and to classify Persian speaking aphasic
patients into different types.

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