title: Effect of incorporating adaptive functioning scores on the prevalence of intellectual disability.
abstract: Surveillance and epidemiologic research on intellectual disability often do not incorporate adaptive functioning (AF) data. Exclusion of AF data leads to overestimation of the prevalence of intellectual disability, the extent of which is not known. In this study, the authors evaluated the effect of incorporating AF data on overall intellectual disability prevalence according to sociodemographic, economic, and severity characteristics. Between 2002 and 2006, the Metropolitan Atlanta Developmental Disabilities Surveillance Program identified 1,595 8-year-old children who met the study's intellectual disability surveillance-case definition of IQ ≤ 70. AF scores were not available for 9.2% of the case children, specifically those with mild intellectual disability and low socioeconomic backgrounds. Prevalence estimates showed few substantive changes when incorporating AF data. The authors conclude that use of IQ data alone appears to be appropriate for measuring population intellectual disability prevalence.
authors: Centers for Disease Control and Prevention, Atlanta, GA, USA.
authors: Obianuju
authors: O
authors: Obi
authors: Kim
authors: K
authors: Van Naarden Braun
authors: Jon
authors: J
authors: Baio
authors: Carolyn
authors: C
authors: Drews-Botsch
authors: Owen
authors: O
authors: Devine
authors: Marshalyn
authors: M
authors: Yeargin-Allsopp
mesh_terms: D000223:Adaptation, Psychological; D002648:Child; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D008607:Intellectual Disability / Q000175:diagnosis* / Q000453:epidemiology*; D007360:Intelligence; D008297:Male; D011159:Population Surveillance; D012959:Socioeconomic Factors; D014481:United States