Title |
Psychometric validation of the Weiss Functional Impairment Rating Scale-Parent Report Form in children and adolescents with attention-deficit/hyperactivity disorder
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Published in |
Health and Quality of Life Outcomes, November 2015
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DOI | 10.1186/s12955-015-0379-1 |
Pubmed ID | |
Authors |
Kavita Gajria, Mark Kosinski, Vanja Sikirica, Michael Huss, Elayne Livote, Kathleen Reilly, Ralf W. Dittmann, M. Haim Erder |
Abstract |
Measurement properties of the Weiss Functional Impairment Rating Scale-Parent Report Form (WFIRS-P), which assesses attention-deficit/hyperactivity disorder (ADHD)-related functional impairment in children/adolescents (6-17 years), were examined. Data from seven randomized, controlled trials were pooled. Analyses were conducted in two random half-samples. WFIRS-P conceptual framework was evaluated using confirmatory factor analyses (CFA). Reliability was estimated using internal consistency (Cronbach's alpha) and test-retest reliability methods. Convergent validity was assessed using correlations between WFIRS-P domain scores and the ADHD-RS-IV and Clinical Global Impression-Severity (CGI-S) scales. Responsiveness was tested by comparing mean changes in WFIRS-P domain scores between responders and non-responders based on clinical criteria. CFA adequately confirmed the item-to-scale relationships defined in the WFIRS-P conceptual framework. Cronbach's alpha coefficient exceeded 0.7 for all domains and test-retest reliability exceeded 0.7 for all but Risky Activities. With few exceptions, WFIRS-P domains correlated significantly (p < 0.05) with ADHD-RS-IV Total, Inattention and Hyperactivity-Impulsivity scores and CGI-S at baseline and follow-up in both random half-samples. Mean changes in WFIRS-P domain scores differed significantly between responder and non-responder groups in the expected direction (p < 0.001). Study results support the reliability, validity and responsiveness of the WFIRS-P. Findings were replicated between two random samples, further demonstrating the robustness of results. |
Mendeley readers
Geographical breakdown
Country | Count | As % |
---|---|---|
Unknown | 84 | 100% |
Demographic breakdown
Readers by professional status | Count | As % |
---|---|---|
Student > Ph. D. Student | 15 | 18% |
Student > Master | 12 | 14% |
Professor | 6 | 7% |
Student > Bachelor | 6 | 7% |
Student > Doctoral Student | 5 | 6% |
Other | 18 | 21% |
Unknown | 22 | 26% |
Readers by discipline | Count | As % |
---|---|---|
Psychology | 19 | 23% |
Medicine and Dentistry | 10 | 12% |
Neuroscience | 10 | 12% |
Social Sciences | 6 | 7% |
Nursing and Health Professions | 2 | 2% |
Other | 9 | 11% |
Unknown | 28 | 33% |