The reliability and validity of the perceive, recall, plan and perform assessment in children with a mitochondrial disorder

Marieke Lindenschot, Saskia Koene, Melissa T. Nott, Maria W.G. Nijhuis-van der Sanden, Imelda J.M. de Groot, Esther M.J. Steultjens, Maud J.L. Graff

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2 Citations (Scopus)
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To investigate the reliability and validity of the Perceive, Recall, Plan and Perform System of Task Analysis (PRPP-Assessment) by parent-provided videos of children with mitochondrial disorders.
Videos of 13 children performing 3–7 activities each were the subject of study, resulting in 65 activities. These were scored using the PRPP-Assessment by 11 raters. Internal consistency was calculated with Cronbach’s alpha. Intra-rater reliability was evaluated by Bland-Altman Plots on 44 PRPP-Assessment scores. Inter-rater reliability was calculated with ICCAgreement on 128 PRPP-Assessment scores. Construct validity was assessed by comparing the PRPP-Assessment scores to the Canadian Occupational Performance Measure using Cohen’s Kappa. PRPP-Assessments scores were evaluated with a multi-faceted Rasch Analysis.
Internal consistency was high (0.92). Intra-rater reliability was sufficient to be good (92–96% within the 95%-Limits of the Agreement). The ICCAgreement for stage 1 Mastery Score showed acceptable inter-rater reliability (0.646). Stage 2 of the PRPP-Assessment showed low ICCs due to a lack of variability within the sample. Four out of six hypotheses on validity were accepted. Rasch's analysis demonstrated sound goodness-of-fit, and supported the validity of the PRPP-Assessment.
The PRPP-Assessment by parent-provided videos in this heterogenic group showed sufficient to good psychometric properties. In practice, careful task selection and formulating criterion is recommended.
Original languageEnglish
Pages (from-to)2354-2367
Number of pages14
JournalDisability and Rehabilitation
Issue number14
Early online date18 Jun 2022
Publication statusPublished - Jul 2023


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