OBJECTIVES:For asthma, attention-deficit/hyperactivity disorder (ADHD), and autism spectrum disorder (ASD), the objectives were to: (1) describe percent increases in parent-reported lifetime prevalence and comorbidity over time and how these vary by socioeconomic status and (2) examine the extent poverty status is a predictor of higherthan-average comorbidities.METHODS: Secondary analyses of the National Survey of Children's Health for years 2003, 2007, and 2011-2012 were conducted to identify trends in parent-reported prevalence and comorbid chronic health conditions from a list provided in the survey among children with asthma, ADHD, and ASD, and we examined variation by sociodemographic characteristics and insurance coverage. By using 2011-2012 data, multivariable regression was used to examine whether poverty status predicted higher-than-average comorbid conditions after adjusting for other sociodemographic characteristics.RESULTS: Parent-reported lifetime prevalence of asthma and ADHD between 2003 and 2011-2012 rose 21% and 43%, respectively, whereas the parent-reported prevalence of ASD rose 32% between 2007 and 2011-2012. The percent increase in asthma was higher among girls and uninsured children. For ADHD, the rise in parent-reported prevalence only varied by age. Being poor was associated with nearly twice the adjusted odds (adjusted odds ratio = 1.72) of having at least 1 comorbidity among children with asthma and more than twice the adjusted odds (adjusted odds ratio = 2.60) of having at least 2 comorbidities among children with ADHD.
CONCLUSIONS:Poverty status differentially influenced parent-reported lifetime prevalence of comorbidities for these target disorders. Future research is needed to examine how poverty influences lack of access and chronic stress and exposure on children to induce comorbidities, especially mental disorders. Dr Pulcini aided in the conceptualization of the study, drafted the initial manuscript, and reviewed and revised the manuscript; Drs Zima and Kelleher aided in conceptualization of the study and critically reviewed and revised the manuscript; Dr Houtrow conceptualized and designed the study and critically reviewed and revised the manuscript; and all authors approved the final manuscript as submitted. What's KnOWn On thIs subject: Children in poverty with chronic conditions are more likely to have higher rates of comorbid disorders and worse outcomes than those not in poverty.
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What thIs stuDy aDDs:The relationship between poverty and comorbid health conditions differs for children with asthma, attention-deficit/hyperactivity disorder, and autism. 6 and a National Academies of Sciences, Engineering, and Medicine 7 report that recognized the challenges in identifying comorbidities among children receiving SSI benefits. 8 However, no data to our knowledge have been published utilizing national data sets to estimate the prevalence of common chronic health conditions and comorbidities among those in poverty utilizing income data as a potential proxy for SSI recipient ...