title: Changing Trends in Asthma Prevalence Among Children.
abstract: BACKGROUND
  Childhood asthma prevalence doubled from 1980 to 1995 and then increased more slowly from 2001 to 2010. During this second period, racial disparities increased. More recent trends remain to be described.
  
  
  METHODS
  We analyzed current asthma prevalence using 2001-2013 National Health Interview Survey data for children ages 0 to 17 years. Logistic regression with quadratic terms was used to test for nonlinear patterns in trends. Differences between demographic subgroups were further assessed with multivariate models controlling for gender, age, poverty status, race/ethnicity, urbanicity, and geographic region.
  
  
  RESULTS
  Overall, childhood asthma prevalence increased from 2001 to 2009 followed by a plateau then a decline in 2013. From 2001 to 2013, multivariate logistic regression showed no change in prevalence among non-Hispanic white and Puerto Rican children and those in the Northeast and West; increasing prevalence among 10- to 17-year-olds, poor children, and those living in the South; increasing then plateauing prevalence among 5- to 9-year-olds, near-poor children, and non-Hispanic black children; and increasing then decreasing prevalence among 0- to 4-year-olds, nonpoor, and Mexican children and those in the Midwest. Non-Hispanic black-white disparities stopped increasing, and Puerto Rican children remained with the highest prevalence.
  
  
  CONCLUSIONS
  Current asthma prevalence ceased to increase among children in recent years and the non-Hispanic black-white disparity stopped increasing due mainly to plateauing prevalence among non-Hispanic black children.
authors.affiliation: National Center for Health Statistics, Centers for Disease Control and Prevention, Hyattsville, Maryland; and US Public Health Service, Rockville, Maryland lea8@cdc.gov.
authors.forename: Lara J
authors.initials: LJ
authors.lastname: Akinbami
authors.affiliation: National Center for Health Statistics, Centers for Disease Control and Prevention, Hyattsville, Maryland; and.
authors.forename: Alan E
authors.initials: AE
authors.lastname: Simon
authors.affiliation: National Center for Health Statistics, Centers for Disease Control and Prevention, Hyattsville, Maryland; and.
authors.forename: Lauren M
authors.initials: LM
authors.lastname: Rossen
mesh_terms: D000293:Adolescent; D001741:Black or African American; D001249:Asthma / Q000453:epidemiology*; D002648:Child; D002675:Child, Preschool; D005260:Female; D006630:Hispanic or Latino; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D015995:Prevalence; D011647:Puerto Rico; D044465:White People