title: Bimanual Capacity of Children With Cerebral Palsy: Intra- and Interrater Reliability of a Revised Edition of the Bimanual Fine Motor Function Classification.
abstract: OBJECTIVE
  To develop a revised edition of the Bimanual Fine Motor Function (BFMF 2), as a classification of fine motor capacity in children with cerebral palsy (CP), and establish intra- and interrater reliability of this edition.
  
  
  METHODS
  The content of the original BFMF was discussed by an expert panel, resulting in a revised edition comprising the original description of the classification levels, but in addition including figures with specific explanatory text. Four professionals classified fine motor function of 79 children (3-17 years; 45 boys) who represented all subtypes of CP and Manual Ability Classification levels (I-V). Intra- and inter-rater reliability was assessed using overall intra-class correlation coefficient (ICC), and Cohen's quadratic weighted kappa.
  
  
  RESULTS
  The overall ICC was 0.86. Cohen's weighted kappa indicated high intra-rater (кw: >0.90) and inter-rater (кw: >0.85) reliability.
  
  
  CONCLUSIONS
  The revised BFMF 2 had high intra- and interrater reliability. The classification levels could be determined from short video recordings (<5 minutes), using the figures and precise descriptions of the fine motor function levels included in the BFMF 2. Thus, the BFMF 2 may be a feasible and useful classification of fine motor capacity both in research and in clinical practice.
authors: a Department of Clinical Services , St. Olavs Hospital, Trondheim University Hospital , Trondheim , Norway.|b Department of Laboratory Medicine , Children's and Women's Health, Faculty of Medicine, Norwegian University of Science and Technology , Trondheim , Norway.
authors: Ann-Kristin G
authors: AG
authors: Elvrum
authors: c Department of Physiotherapy , Institute of Neuroscience and Physiology, Sahlgrenska, Academy at the University of Gothenburg , Gothenburg , Sweden.
authors: Eva
authors: E
authors: Beckung
authors: b Department of Laboratory Medicine , Children's and Women's Health, Faculty of Medicine, Norwegian University of Science and Technology , Trondheim , Norway.|d Department of Paediatrics , St. Olavs Hospital, Trondheim University Hospital , Trondheim , Norway.
authors: Rannei
authors: R
authors: Sæther
authors: e Regional Centre for Child and Youth Mental Health and Child Welfare, Faculty of Medicine, Norwegian University of Science and Technology , Trondheim , Norway.
authors: Stian
authors: S
authors: Lydersen
authors: b Department of Laboratory Medicine , Children's and Women's Health, Faculty of Medicine, Norwegian University of Science and Technology , Trondheim , Norway.
authors: Torstein
authors: T
authors: Vik
authors: f Department of Pediatrics , Institute of Clinical Sciences, Queen Silvia Children's, Hospital, Sahlgrenska Academy at the University of Gothenburg , Gothenburg , Sweden.
authors: Kate
authors: K
authors: Himmelmann
mesh_terms: D000293:Adolescent; D002547:Cerebral Palsy / Q000503:physiopathology*; D002648:Child; D002675:Child, Preschool; D004185:Disability Evaluation; D005260:Female; D006225:Hand / Q000503:physiopathology; D006801:Humans; D008297:Male; D009048:Motor Skills / Q000502:physiology*; D015588:Observer Variation; D015203:Reproducibility of Results
keywords: Bimanual fine motor function; capacity; cerebral palsy; classification; hand function; reliability