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Quality of Life Research

, Volume 28, Issue 1, pp 241–251 | Cite as

Psychometric properties of a modified version of the Weiss Functional Impairment Rating Scale-Parent Report (WFIRS-P) in a clinical sample of children with aggressive behavior

  • Teresa KernderEmail author
  • Manfred Doepfner
  • Christina Dose
  • Anja Goertz-Dorten
Article

Abstract

Purpose

To evaluate the psychometric properties of a German modification of the Weiss Functional Impairment Rating Scale—Parent Report for children with aggressive and oppositional behavior problems (WFIRS-P for ODD/CD).

Methods

Data were collected from a clinical sample of children (6–12 years; 96% boys) with oppositional defiant disorder (ODD) and conduct disorder (CD) (N = 219). The WFIRS-P conceptual framework was evaluated using confirmatory factor analyses (CFA). Reliability was estimated using internal consistency (Cronbach’s alpha) and omega statistics. Validity was assessed through correlations between WFIRS-P for ODD/CD domain scores and parent-rated scales on symptoms of ODD, CD, attention-deficit/hyperactivity disorder (ADHD), a broad range of other behavioral and emotional problems, and scales on health-related quality of life and family burden.

Results

CFA of the WFIRS-P for ODD/CD revealed that a bifactor model, with a general factor accounting for common variance (ωH = 0.23–0.48) and independent specific group factors accounting for additional variance in item scores (ωS = 0.37–0.60), best fits the data. Thus, CFA confirmed the theoretical assumption of a general construct of impairment (total scale) and additional specific impairments (subscales, e.g., family, social activities). Cronbach’s alpha coefficient exceeded 0.70 for all subscales. Omega statistics showed that both the general construct and specific factors accounted for item variance. As expected, correlations with symptoms scales for ODD/CD and ADHD were low to moderate.

Conclusions

The use of the parent-rated WFIRS for ODD/CD in identifying ODD- and CD-related impairment in children is psychometrically supported. The scale can be employed to assess functional impairment in children with aggressive behavior problems.

Keywords

Oppositional defiant disorder Children Functional impairment Weiss Functional Impairment Rating Scale Psychometric properties 

Notes

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interests.

Ethical approval

All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.

Informed consent

Informed consent was obtained from all individual participants included in the study. Written informed consent was obtained from the parents.

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Copyright information

© Springer Nature Switzerland AG 2018

Authors and Affiliations

  • Teresa Kernder
    • 1
    Email author
  • Manfred Doepfner
    • 1
    • 2
  • Christina Dose
    • 2
  • Anja Goertz-Dorten
    • 1
  1. 1.School of Child and Adolescent Cognitive Behavior Therapy (AKiP)University Hospital CologneCologneGermany
  2. 2.Department of Child and Adolescent Psychiatry, Psychosomatics and PsychotherapyMedical Faculty of the University of CologneCologneGermany

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