title: Standardized ADOS scores: measuring severity of autism spectrum disorders in a Dutch sample.
abstract: The validity of the calibrated severity scores on the ADOS as reported by Gotham et al. (J Autism Dev Disord 39: 693-705, 2009), was investigated in an independent sample of 1248 Dutch children with 1455 ADOS administrations (modules 1, 2 and 3). The greater comparability between ADOS administrations at different times, ages and in different modules, as reached by Gotham et al. with the calibrated severity measures, seems to be corroborated by the current study for module 1 and to a lesser extent for module 3. For module 2, the calibrated severity scores need to be further investigated within a sample that resembles Gotham's sample in age and level of verbal functioning.
authors.affiliation: Department of Child and Adolescent Psychiatry, University Medical Center Groningen, Accare Groningen, PO Box 660, 9700 AR, Groningen, The Netherlands. a.de.bildt@accare.nl
authors.forename: Annelies
authors.initials: A
authors.lastname: de Bildt
authors.forename: Iris J
authors.initials: IJ
authors.lastname: Oosterling
authors.forename: Natasja D J
authors.initials: ND
authors.lastname: van Lang
authors.forename: Sjoerd
authors.initials: S
authors.lastname: Sytema
authors.forename: Ruud B
authors.initials: RB
authors.lastname: Minderaa
authors.forename: Herman
authors.initials: H
authors.lastname: van Engeland
authors.forename: Sascha
authors.initials: S
authors.lastname: Roos
authors.forename: Jan K
authors.initials: JK
authors.lastname: Buitelaar
authors.forename: Rutger-Jan
authors.initials: RJ
authors.lastname: van der Gaag
authors.forename: Maretha V
authors.initials: MV
authors.lastname: de Jonge
mesh_terms: D002648:Child; D002659:Child Development Disorders, Pervasive / Q000175:diagnosis*; D005260:Female; D006801:Humans; D008297:Male; D009426:Netherlands; D011594:Psychometrics; D015203:Reproducibility of Results; D012720:Severity of Illness Index