Turkish validity and reliability study of the Weiss Functional Impairment Rating Scale-Parent Report

Attention deficit hyperactivity disorder (ADHD) is seen frequently in childhood and leads to marked impairment in functioning. There is no scale in Turkey with documented validity and reliability that assesses ADHD-specific functional impairment (FI). This study aimed at adapting the Weiss Functiona...

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Bibliographic Details
Published in:	Attention deficit and hyperactivity disorders Vol. 7; no. 2; pp. 129 - 139
Main Authors:	Tarakçıoğlu, Mahmut C., Çakın Memik, Nursu, Olgun, Nesligül N., Aydemir, Ömer, Weiss, Margaret D.
Format:	Journal Article
Language:	English
Published:	Vienna Springer Vienna 01-06-2015
Subjects:	Attention Deficit Disorder with Hyperactivity - diagnosis Case-Control Studies Child Factor Analysis, Statistical Female Humans Male Medicine Medicine & Public Health Original Article Parents Psychiatric Status Rating Scales - standards Psychiatry Psychometrics Reproducibility of Results Turkey Turkey ADHD Validity Scale Reliability Functioning Quality of life
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Summary:	Attention deficit hyperactivity disorder (ADHD) is seen frequently in childhood and leads to marked impairment in functioning. There is no scale in Turkey with documented validity and reliability that assesses ADHD-specific functional impairment (FI). This study aimed at adapting the Weiss Functional Impairment Rating Scale-Parent Report (WFIRS-P), which assesses ADHD-related FI, for use in Turkey, and examining psychometric aspects of the scale. The study included 250 children diagnosed with ADHD and 250 healthy children and their parents. Internal consistency and test–retest methods were used to test the reliability of the scale. Validity was tested with exploratory and confirmatory factor analyses and convergent and discriminant validity analyses. Since all six questions of the WFIRS-P were scored 0, analyses were conducted for the original scale questionnaire consisting of 50 items and the questionnaire consisting of 44 items where the six questions scored 0 were not included. The Cronbach’s alpha coefficient was 0.93 for the whole scale. The Spearman’s correlation coefficient was 0.93 for test–retest reliability. The exploratory factor analysis run on the 44-item questionnaire showed that the scale items were best represented in a 7-factor structure, but some items were placed in different subdomains than those of the original scale. In the confirmatory factor analysis, the root mean square error of approximation was 0.061, and the comparative fit index was 0.95 for the whole model. Therefore, the Turkish WFIRS-P is valid and reliable in testing functional impairment in children with ADHD.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	1866-6116 1866-6647
DOI:	10.1007/s12402-014-0158-6