Co-occurrence of autism and asthma in a nationally-representative sample of children in the United States

J Autism Dev Disord. 2014 Dec;44(12):3083-8. doi: 10.1007/s10803-014-2174-y.

Abstract

Few large epidemiological studies have examined the co-occurrence of autism and asthma. We performed a cross-sectional study to examine this association using the 2007 National Survey of Children's Health dataset (n = 77,951). We controlled for confounders and tested for autism-secondhand smoke interaction. Prevalence of asthma and autism were 14.5 % (n = 11,335) and 1.81 % (n = 1,412) respectively. Unadjusted odds ratio (OR) for asthma among autistic children was 1.35 (95 % CI 1.18-1.55). Adjusting for covariates (age, gender, body mass index, race, brain injury, secondhand smoke and socio-economic status) attenuated the OR to 1.19 (95 % CI 1.03-1.36). Autism-secondhand smoke interaction was insignificant (p = 0.38). Asthma is approximately 35 % more common in autistic children; screening may be an efficient approach to reduce risk of morbidity due to asthma.

MeSH terms

  • Adolescent
  • Asthma / diagnosis*
  • Asthma / epidemiology*
  • Autistic Disorder / diagnosis*
  • Autistic Disorder / epidemiology*
  • Body Mass Index
  • Child
  • Child, Preschool
  • Comorbidity
  • Cross-Sectional Studies
  • Female
  • Health Surveys* / methods
  • Humans
  • Male
  • Tobacco Smoke Pollution / adverse effects
  • United States / epidemiology

Substances

  • Tobacco Smoke Pollution