Co-occurrence of autism and asthma in a nationally-representative sample of children in the United States.
Asthma shows up about a third more often in autistic kids—add one asthma checkbox to your intake form.
01Research in Context
What this study did
Kotey et al. (2014) looked at a big national survey of U.S. kids. They asked, 'Do children with autism also have more asthma?'
They compared kids with and without autism. The survey covered thousands of families, so the picture is broad, not just clinic kids.
What they found
Kids with autism were about 35 % more likely to have asthma. The rise was small but real after the team adjusted for age, sex, and income.
In plain words, for every 100 autistic kids, roughly 11 had asthma, versus 8 in 100 non-autistic kids.
How this fits with other research
Dai et al. (2019) extends the same idea. They found asthma is also more common in brothers and sisters of autistic kids. This hints that shared family genes or home environments may drive both conditions.
Kaiser et al. (2022) widens the lens. Their review shows autistic kids also face higher odds of inflammatory bowel disease. Asthma and IBD are both inflammatory, so immune differences may link them.
Rydzewska et al. (2019) looked at a whole-country census and saw autism traveling with many medical problems, not just asthma. Stanley’s asthma finding now sits inside this bigger health map.
Why it matters
If you screen for asthma at intake, you can spot breathing issues that might worsen behavior or sleep. Quick referral to a pediatrician can cut emergency visits and missed therapy days. Add one asthma question to your parent form today—it costs nothing and may save a lot.
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02At a glance
03Original 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.
Journal of autism and developmental disorders, 2014 · doi:10.1007/s10803-014-2174-y