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. Author manuscript; available in PMC: 2017 Apr 1.
Published in final edited form as: Ann Epidemiol. 2016 Mar 22;26(4):267–274. doi: 10.1016/j.annepidem.2016.02.012

Table 1.

Developmental disability classification schemes and sample sizes: children 3–17 years of age, 2011–2012 National Survey of Children’s Health

Developmental
Disability (without
consideration of
co-occurrence)		 Total No. with
diagnosis		 % Mutually exclusive DD categories Total No. in mutually
exclusive category		 % % of total with
diagnosis included
in mutually
exclusive category
CP 236 0.2 CP 236 0.2 100.0
ASD 1447 1.9 ASD (no CP) 1416 1.9 97.9
ID 862 1.1 ID (no CP, ASD) 492 0.6 57.1
BCD 1984 3.1 BCD (no CP, ASD, ID) 1446 2.3 72.9
ADHD 5962 8.2 ADHD (no CP, ASD, ID, BCD) 4198 5.6 70.4
LD 5603 7.8 LD (no CP, ASD, ID, BCD, ADHD) 1953 2.9 34.9
Other developmental delay 2608 3.4 Other developmental delay (no CP,
ASD, ID, BCD, ADHD, LD)		 346 0.4 13.3
No developmental delay 64,478 86.2 No developmental delay 64,478 86.2 —