Habib Hadianfard1, Behnaz Kiani1, Margaret D Weiss2,3. 1. 1 Shiraz University, Iran. 2. 2 University of Arkansas for Medical Sciences, Little Rock, USA. 3. 3 University of British Columbia, Vancouver, Canada.
Abstract
OBJECTIVE: The Weiss Functional Impairment Rating Scale-Self-Report Form (WFIRS-S) was developed as a measure of functional impairment in adolescents and adults with ADHD. This study reports the psychometric properties of the Persian version of the WFIRS-S in a sample of normal Iranian adolescents. METHOD: Internal consistency and factor structure of the WFIRS-S were tested on a sample of 386 students (Grades 7-12). The test-retest reliability and the convergent validity of the WFIRS-S were evaluated by using two different subsamples including 50 and 100 students, respectively. RESULTS: The Cronbach's alpha values were between .72 and .94 for the WFIRS-S subdomains and total scale. The test-retest reliability was .80 for the total scale. The WFIRS-S subdomains had moderate to high significant correlations with the Pediatric Quality of Life total scale. CONCLUSION: The Persian version of the WFIRS-S has acceptable psychometric properties and could be used as a functional impairment assessment for adolescents.
OBJECTIVE: The Weiss Functional Impairment Rating Scale-Self-Report Form (WFIRS-S) was developed as a measure of functional impairment in adolescents and adults with ADHD. This study reports the psychometric properties of the Persian version of the WFIRS-S in a sample of normal Iranian adolescents. METHOD: Internal consistency and factor structure of the WFIRS-S were tested on a sample of 386 students (Grades 7-12). The test-retest reliability and the convergent validity of the WFIRS-S were evaluated by using two different subsamples including 50 and 100 students, respectively. RESULTS: The Cronbach's alpha values were between .72 and .94 for the WFIRS-S subdomains and total scale. The test-retest reliability was .80 for the total scale. The WFIRS-S subdomains had moderate to high significant correlations with the Pediatric Quality of Life total scale. CONCLUSION: The Persian version of the WFIRS-S has acceptable psychometric properties and could be used as a functional impairment assessment for adolescents.
Authors: Mahla Azizzadeh Herozi; Fatemeh Mohajelin; Habib Hadianfard; Behnaz Kiani; John T Mitchell Journal: Health Qual Life Outcomes Date: 2021-03-26 Impact factor: 3.186