title: Internal consistency and validity of the QuickDASH instrument for upper extremity injuries in older children.
abstract: BACKGROUND
  The short version of the Disabilities of the Arm, Shoulder and Hand instrument (QuickDASH) has been shown to be a valid, reliable, and responsive measure of upper extremity function in adults. However, the psychometric properties of the QuickDASH for younger patients have not been well established. The purpose of this study was to evaluate the internal consistency and validity of the QuickDASH for use with older children and adolescents.
  
  
  METHODS
  The QuickDASH and PedsQL instruments were administered to 149 patients grouped into ages 8 to 12 and 13 to 18 years.
  
  
  RESULTS
  Item response analysis showed a low SE of measurement (0.06) and a high coefficient α (0.91), suggesting high internal consistency among items. The QuickDASH was found to be a predictor of PedsQL score for both groups (P<0.01).
  
  
  CONCLUSIONS
  The results indicate that the QuickDASH is a consistent and valid instrument for older children and adolescents with upper extremity pathology.
  
  
  METHODS
  III, case series.
authors.affiliation: *Department of Occupational and Physical Therapy, The Sports Medicine Biodynamics Center †Division of Biostatistics and Epidemiology, Cincinnati Children's Hospital Medical Center ‡School of Allied Medical Health Professions, Sports Performance and Health Institute §Department of Orthopaedics, Wexner Medical Center, The Ohio State University, Columbus, OH.
authors.forename: Catherine C
authors.initials: CC
authors.lastname: Quatman-Yates
authors.forename: Resmi
authors.initials: R
authors.lastname: Gupta
authors.forename: Mark V
authors.initials: MV
authors.lastname: Paterno
authors.forename: Laura C
authors.initials: LC
authors.lastname: Schmitt
authors.forename: Carmen E
authors.initials: CE
authors.lastname: Quatman
authors.forename: Richard F
authors.initials: RF
authors.lastname: Ittenbach
mesh_terms: D000293:Adolescent; D002648:Child; D003430:Cross-Sectional Studies; D004185:Disability Evaluation; D005260:Female; D006801:Humans; D008297:Male; D017063:Outcome Assessment, Health Care; D011594:Psychometrics / Q000379:methods*; D011788:Quality of Life / Q000523:psychology*; D015203:Reproducibility of Results; D011795:Surveys and Questionnaires; D034941:Upper Extremity / Q000293:injuries*