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TABLE 5

Trends in Prevalence of Specific Developmental Disabilities in Children Aged 3 to 17 Years, NHIS, 2009 to 2017

ConditionN (Unweighted)2009–2011, %2012–2014, %2015–2017, %Percent Change 2009–2011 vs 2015–2017P for Linear Trend
Any developmental disability 14 743 16.22 16.80 17.76 9.5 <.001 
ADHD 7918 8.47 9.10 9.54 12.6 .001 
ASD 1550 1.12 1.60 2.49 122.3 <.001 
Blind or unable to see at all 139 0.16 0.16 0.16 0.0 .87 
CP 264 0.31 0.34 0.28 −9.7 .64 
Moderate to profound hearing loss 537 0.64 0.68 0.58 −9.4 .48 
LD 6871 7.86 7.51 7.86 0.0 .99 
ID 1021 0.93 1.21 1.17 25.8 .04 
Seizures, past 12 mo 668 0.83 0.70 0.78 −6.0 .61 
Stuttered or stammered, past 12 mo 1771 2.04 1.90 2.13 4.4 .61 
Other developmental delay 3798 4.65 4.43 4.06 −12.7 .01 
ConditionN (Unweighted)2009–2011, %2012–2014, %2015–2017, %Percent Change 2009–2011 vs 2015–2017P for Linear Trend
Any developmental disability 14 743 16.22 16.80 17.76 9.5 <.001 
ADHD 7918 8.47 9.10 9.54 12.6 .001 
ASD 1550 1.12 1.60 2.49 122.3 <.001 
Blind or unable to see at all 139 0.16 0.16 0.16 0.0 .87 
CP 264 0.31 0.34 0.28 −9.7 .64 
Moderate to profound hearing loss 537 0.64 0.68 0.58 −9.4 .48 
LD 6871 7.86 7.51 7.86 0.0 .99 
ID 1021 0.93 1.21 1.17 25.8 .04 
Seizures, past 12 mo 668 0.83 0.70 0.78 −6.0 .61 
Stuttered or stammered, past 12 mo 1771 2.04 1.90 2.13 4.4 .61 
Other developmental delay 3798 4.65 4.43 4.06 −12.7 .01 

In 2011, “mental retardation” was replaced with “intellectual disability, also known as mental retardation.” In addition, the autism categorization was expanded to include “autism spectrum disorder.” In 2014, the question on ASD became a standalone question with an expanded list of eligible conditions, including Asperger's disorder and pervasive developmental disorder. No test of quadratic trends over the 3 trend periods was significant at the P < .05 level for any condition.

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