Psychometric Properties of the Persian Version of the Weiss Functional Impairment Rating Scale–Self-Report Form in Iranian Adolescents

Hadianfard, Habib; Kiani, Behnaz; Weiss, Margaret

doi:10.1177/1087054717738084

Cited by 11 publications

(24 citation statements)

References 34 publications

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“…The total score is the mean score for all items and the domain score is the mean score of the items in each domain. The WFIRS-P has shown strong psychometric properties in clinical settings (Tarakçıoğlu et al 2015 ), research populations (Gajria et al 2015 ), and population samples (Hadianfard et al 2017 ). Internal consistency was demonstrated by alpha >0.9 for the measure as a whole and >0.7 for all domains (Gajria et al 2015 ); test–retest reliability was evidenced by r > 0.7 after 1–4 weeks; moderate to strong correlations between each domain and the scale as a whole; and confirmatory factor analysis of the domains (Weiss et al 2005 , 2007 ; Molina et al 2009 ; Qian et al 2011 ; Gajria et al 2015 ; Punyapas et al 2015 ; Tarakçıoğlu et al 2015 ; Dose et al 2016 ; Hadianfard et al 2017 ).…”

Section: Methodsmentioning

confidence: 99%

Relationship Between Symptomatic and Functional Improvement and Remission in a Treatment Response to Stimulant Trial

Weiss

Childress

Mattingly

et al. 2018

Journal of Child and Adolescent Psychopharmacology

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Objective: To evaluate the relationship between symptom and functional improvement and remission in children and adolescents with attention-deficit/hyperactivity disorder (ADHD) enrolled in an 11-week open-label dose-optimization phase of an methylphenidate extended release (MPH-MLR) pivotal study.Methods: Assessments included the Weiss Functional Impairment Rating Scale-Parent (WFIRS-P) and ADHD Rating Scale, Fourth Edition (ADHD-RS-IV). Definitions included the following: symptom improvement (≥30% decrease in ADHD-RS-IV total score); symptom remission (ADHD-RS-IV total score ≤18); functional improvement (decrease in WFIRS-P total score ≥0.25 [minimally important difference]); and functional remission (WFIRS-P total score ≤0.65).Results: Two hundred children completed the open-label phase. At initial assessment, functional impairment was evident across all WFIRS-P domains and similar between children and adolescents. Those who were treatment naive had more functional impairment (WFIRS-P total: 0.82 vs. 0.70, p = 0.02). Significant improvements in all WFIRS-P domains were noted at open-label end (p < 0.001), with the largest improvement in Learning. At open-label end, 94% of children and adolescents demonstrated symptom improvement, of which 57% also showed functional improvement, and 75% of children and adolescents showed symptom remission, of which 81% also showed functional remission.Conclusions: Children and adolescents treated with MPH-MLR showed moderate-to-large improvement in functioning during 3 months of treatment, both overall and in specific domains. However, a significant number of those who would be considered symptomatic responders failed to show improvement in functioning or continue to have significant functional impairment. Treatment with MPH-MLR showed that both symptomatic and functional remission are achievable goals. Identification of children and adolescents who have been successfully treated for their symptoms, but continue to suffer functional impairment, will allow us to offer additional targeted treatment interventions over and above medication to address residual difficulties.

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Section: Methodsmentioning

confidence: 99%

Relationship Between Symptomatic and Functional Improvement and Remission in a Treatment Response to Stimulant Trial

Weiss

Childress

Mattingly

et al. 2018

Journal of Child and Adolescent Psychopharmacology

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“…The WFIRS-S showed a moderate relationship with the Global Assessment Functioning and Conners’ Adult ADHD Rating Scale 21 on most domains, and a strong correlation with the Pediatric Quality of Life Inventory (PedsQL) Total and Psychosocial Health subscale. 23 In relation to divergent validity, the WFIRS demonstrated a relatively weak relationship with a measure of depression. 21 Confirmatory factor analysis (CFA) confirmed a seven-factor solution as specified in the WFIRS-S. 21 23 …”

Section: Psychometric Validation Studies Of the Wfirsmentioning

confidence: 99%

“… 20 Collectively across the WFIRS-S and WFIRS-P, the measure has been translated into 18 languages (Swedish, Chinese, Danish, English, French, European Spanish, American Spanish, Japanese, Norwegian, Thai, Urdu, German, Dutch, Italian, Turkish, Polish, Russian and Persian). Additionally, psychometric investigations have been conducted on the WFIRS using samples from Japan, 21 Thailand, 22 Iran, 23 China, 24 Turkey, 25 Germany, 26 the USA, 27 and in a sample from clinical trials conducted in North America, Australia and Europe. 28 …”

Section: Wfirs Overviewmentioning

confidence: 99%

“…The samples used in the WFIRS-S investigations included adult university students, 21 27 adults with ADHD, adults without any psychiatric disorders, 21 an adolescent public school sample 23 and youth with ADHD. 22 The average WFIRS-S Total score for a subset of adult students with ADHD was 0.88 and adult students without ADHD was 0.35.…”

Section: Psychometric Validation Studies Of the Wfirsmentioning

confidence: 99%

“… 27 The non-ADHD average score found in Canu et al’ s 27 study is similar with the average score of 0.31 found in the non-psychiatric public school sample of adolescents. 23 No research has been done to date, however, to determine the receiver operating characteristics (ROC) that would best distinguish clinical from non-clinical samples on the WFIRS-S.…”

Section: Psychometric Validation Studies Of the Wfirsmentioning

confidence: 99%

See 2 more Smart Citations

Conceptual review of measuring functional impairment: findings from the Weiss Functional Impairment Rating Scale

Weiss¹,

McBride²,

Craig

et al. 2018

Evid Based Mental Health

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ObjectiveThis is a narrative review of validation and outcome studies using the Weiss Functional Impairment Rating Scale (WFIRS). The objective of the review is to establish a framework for understanding functional impairment and create a definition for functional response and remission.MethodsWe conducted a literature search via MEDLINE, EBSCO and Google Scholar with no date restrictions and reviewed bibliographies of selected publications. Publications found in languages other than English were translated and clarification obtained from the author(s) if needed. Inclusion criteria were any manuscript that was either a WFIRS psychometric validation study or a clinical trial using the WFIRS as an outcome. There were no exclusion criteria.ResultsThe WFIRS has been validated in multiple cultures, and in clinical, research and control populations. The WFIRS has robust psychometric properties across ages, psychiatric status and informants. Outcome studies show variable improvement, with different response patterns between domains and among different interventions.ConclusionSymptom improvement and remission needs to be complemented with evaluation of functional improvement and remission to obtain a full picture of clinical status over the course of treatment.

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Self-Report Measures for Assessing ADHD in Adults

Canu,

Johnson,

Blum

2023

Autism and Child Psychopathology Series

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Psychometric Properties of the Persian Version of the Weiss Functional Impairment Rating Scale–Self-Report Form in Iranian Adolescents

Abstract: The Persian version of the WFIRS-S has acceptable psychometric properties and could be used as a functional impairment assessment for adolescents.

Cited by 11 publications

References 34 publications

Relationship Between Symptomatic and Functional Improvement and Remission in a Treatment Response to Stimulant Trial

Relationship Between Symptomatic and Functional Improvement and Remission in a Treatment Response to Stimulant Trial

Conceptual review of measuring functional impairment: findings from the Weiss Functional Impairment Rating Scale

Self-Report Measures for Assessing ADHD in Adults

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