title: Baseline Performance and Psychometric Properties of the Child Sport Concussion Assessment Tool 3 (Child-SCAT3) in 5- to 13-year-old Athletes.
abstract: OBJECTIVE
  To determine the normative, baseline performance and psychometric properties of the Child Sport Concussion Assessment Tool 3 (Child-SCAT3) in 5- to 13-year-old athletes.
  
  
  METHODS
  Cross-sectional study.
  
  
  METHODS
  Practice fields.
  
  
  METHODS
  Contact sport athletes (N = 155) 5 to 13 years old.
  
  
  METHODS
  Age, gender, verbal intellectual functioning (receptive vocabulary).
  
  
  METHODS
  Child-SCAT3: self-reported and parent-reported symptoms, cognitive performance (child form of the Standardized Assessment of Concussion; SAC-C), and balance (modified Balance Error Scoring System, mBESS-C; tandem gait). A subset of the sample repeated the Child-SCAT3 at another date. Some subjects also completed the Adult-SCAT3 version of the symptom checklist and mBESS.
  
  
  RESULTS
  Small-to-medium-sized effects of age were observed on all Child-SCAT3 components. Effects of gender and receptive vocabulary were observed on select components of the SCAT3. Younger age and lower receptive vocabulary were independently associated with greater symptom endorsement, yet parents rated higher symptom burden for older children. Internal consistency reliability and stability of symptom ratings was good to excellent. Stability was more modest for SAC-C and tandem gait scores and very poor for mBESS-C scores, perhaps due to restricted variance. Inter-rater reliability (self-rated vs parent-rated symptoms) was fair.
  
  
  CONCLUSIONS
  The Child-SCAT3 self-report symptom checklist may be inappropriate to administer to younger school-aged children. Some of the age effects observed warrant use of demographically appropriate norms in Child-SCAT3 interpretation. The findings can provide guidance for clinicians assessing children of varying ages and point to directions for further development of refined approaches for pediatric concussion assessment.
authors.affiliation: Departments of *Neurosurgery; and †Neurology, Medical College of Wisconsin, Milwaukee, Wisconsin.
authors.forename: Lindsay D
authors.initials: LD
authors.lastname: Nelson
authors.forename: Michelle M
authors.initials: MM
authors.lastname: Loman
authors.forename: Ashley A
authors.initials: AA
authors.lastname: LaRoche
authors.forename: Robyn E
authors.initials: RE
authors.lastname: Furger
authors.forename: Michael A
authors.initials: MA
authors.lastname: McCrea
mesh_terms: D000293:Adolescent; D056352:Athletes; D001265:Athletic Injuries / Q000175:diagnosis*; D001924:Brain Concussion / Q000175:diagnosis*; D002648:Child; D002675:Child, Preschool; D003071:Cognition; D003430:Cross-Sectional Studies; D005260:Female; D005538:Football; D005684:Gait; D006801:Humans; D008297:Male; D009483:Neuropsychological Tests; D010290:Parents; D004856:Postural Balance; D011594:Psychometrics; D012016:Reference Values; D015203:Reproducibility of Results; D057566:Self Report; D012916:Soccer; D014922:Wisconsin