title: The Perceive, Recall, Plan and Perform (PRPP) system for persons with Parkinson's disease: a psychometric study.
abstract: BACKGROUND
  The Perceive, Recall, Plan & Perform (PRPP) system of task analysis might be feasible to evaluate occupational performance and information processing strategies for persons with Parkinson's disease (PD).
  
  
  OBJECTIVE
  To evaluate: (1) the random error between raters (inter-rater study), (2) the random error within raters (intra-rater study), and (3) the internal consistency of the PRPP.
  
  
  METHODS
  (1) video-recorded performance of meaningful activities of 13 Dutch persons with PD, scored independently by 38 Dutch PRPP trained occupational therapists were included in the analysis. The random error between raters was analyzed with two-way random Intraclass Correlation Coefficients (ICC). (2) Four videos were scored twice by 30 raters (6 week time interval). The random error within raters was analyzed using one-way random ICC's. (3) Internal consistency study: data of 190 persons with PD were analyzed using Cronbach's alpha (α).
  
  
  RESULTS
  Inter-rater reliability ranged from slight to moderate (ICC= 0.06-0.43). The mean intra-rater reliability ranged from moderate to almost perfect (ICC= 0.60-0.83). Internal consistency is good (α = 0.60-0.86).
  
  
  CONCLUSIONS
  The limited inter-rater reliability but adequate intra-rater reliability and internal consistency show the feasibility of the PRPP when used for persons with PD. Implications for reliable clinical use are discussed.
authors.affiliation: a Expertise Center Neuro-Rehabilitation, HAN University of Applied Sciences , Nijmegen , The Netherlands.|b Department of Occupational Therapy , Rehabilitation Center Klimmendaal , Arnhem , The Netherlands.
authors.forename: Bianca J
authors.initials: BJ
authors.lastname: Van Keulen-Rouweler
authors.affiliation: c Department of Rehabilitation , Radboud University Medical Center, Donders Center for Neurosciences , Nijmegen , The Netherlands.
authors.forename: Ingrid H W M
authors.initials: IH
authors.lastname: Sturkenboom
authors.affiliation: d Division of Occupational Therapy , Karolinska Institutet , Huddinge , Sweden.|e Department of Occupational Therapy , Zurich University of Applied Sciences , Winterthur , Switzerland.
authors.forename: Anders
authors.initials: A
authors.lastname: Kottorp
authors.affiliation: f Department of Rehabilitation and IQ Healthcare , Radboud University Medical Center, Donders Center for Neuroscience , Nijmegen , The Netherlands.
authors.forename: Maud J L
authors.initials: MJ
authors.lastname: Graff
authors.affiliation: g Department of Rehabilitation and IQ Healthcare , Radboud University Medical Center, Radboud Institute for Health Sciences , Nijmegen , The Netherlands.
authors.forename: Maria W G M
authors.initials: MW
authors.lastname: Nijhuis-Van der Sanden
authors.affiliation: a Expertise Center Neuro-Rehabilitation, HAN University of Applied Sciences , Nijmegen , The Netherlands.
authors.forename: Esther M J
authors.initials: EM
authors.lastname: Steultjens
mesh_terms: D000203:Activities of Daily Living / Q000523:psychology*; D000328:Adult; D000368:Aged; D005260:Female; D015577:Geriatric Assessment / Q000379:methods; D006801:Humans; D008297:Male; D009426:Netherlands; D015588:Observer Variation; D010300:Parkinson Disease / Q000523:psychology*; D011594:Psychometrics / Q000379:methods*; D015203:Reproducibility of Results; D013647:Task Performance and Analysis; D014741:Video Recording
keywords: Assessment; inter-rater reliability; internal consistency; intra-rater reliability; occupational performance; task analysis