title: The test of infant motor performance: reliability in spinal muscular atrophy type I.
abstract: OBJECTIVE
  The aim of this article was to determine reliability of the Test of Infant Motor Performance (TIMP) in infants with spinal muscular atrophy, type I (SMA-I).
  
  
  METHODS
  Interrater reliability training was undertaken by 17 physical therapist evaluators using 6 infants with hypotonia and weakness (5 videotaped, 1 live). Eight trained evaluators then conducted a test-retest reliability study at their own center, performing 2 tests approximately 1 month apart on each of 11 infants with genetically confirmed SMA-I (5 boys, 6 girls; age range 37-501 days; 3 on pulmonary support).
  
  
  RESULTS
  The interrater reliability training session had an overall weighted Kappa of 0.61 (95% confidence interval 0.59-0.63). For the test-retest reliability study, the intraclass correlation coefficient for the TIMP Total Score was 0.85 (95% confidence interval: 0.54-0.96). The test scores were not significantly different between the 2 sessions (Bradley-Blackwood test was nonsignificant).
  
  
  CONCLUSIONS
  TIMP scores can be reliably obtained in infants with SMA-I.
authors.affiliation: Department of Neurology, Division of Neurology, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania 19104, USA. finkel@email.chop
authors.forename: Richard S
authors.initials: RS
authors.lastname: Finkel
authors.forename: Linda S
authors.initials: LS
authors.lastname: Hynan
authors.forename: Allan M
authors.initials: AM
authors.lastname: Glanzman
authors.forename: Hollis
authors.initials: H
authors.lastname: Owens
authors.forename: Leslie
authors.initials: L
authors.lastname: Nelson
authors.forename: Stephanie R
authors.initials: SR
authors.lastname: Cone
authors.forename: Suzann K
authors.initials: SK
authors.lastname: Campbell
authors.forename: Susan T
authors.initials: ST
authors.lastname: Iannaccone
mesh_terms: D002657:Child Development; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D009048:Motor Skills / Q000502:physiology*; D015588:Observer Variation; D026761:Physical Therapy Specialty / Q000295:instrumentation* / Q000592:standards*; D015203:Reproducibility of Results; D014897:Spinal Muscular Atrophies of Childhood / Q000175:diagnosis / Q000503:physiopathology*; D014741:Video Recording