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. Author manuscript; available in PMC: 2018 May 7.
Published in final edited form as: Autism. 2017 Mar 22;22(4):450–459. doi: 10.1177/1362361316683888

Table 3.

Demographics, BMI and weight status in children with ASD and NHANESa controls.

Characteristic Group
p-value
ASD
(N = 276)
Controls
(N = 544)
medianb
(25th – 75th)
medianb
(25th – 75th)

Age (months) 89 (70 – 112.5) 90 (69.5 – 113) 0.865

N (%) N (%)

Sex
 Female 43 (15.6%) 85 (15.6%) 0.987
 Male 233 (84.4%) 459 (84.4%)
Race/Ethnicity
 Non-Hispanic White 193 (69.9%) 384 (70.6%) 0.993
 Non-Hispanic African American 30 (10.9%) 60 (11.0%)
 Hispanic 24 (8.7%) 46 (8.5%)
 Other 29 (10.5%) 54 (9.9%)
Parent’s Highest Education
 Less than 9th Grade 3 (1.1%) 5 (0.9%) 1.00
 Some High School 11 (4.0%) 22 (4.0%)
 High School or GED equivalent 44 (15.9%) 86 (15.8%)
 Some College 85 (30.8%) 166 (30.5%)
 College Degree or Higher 133 (48.2%) 265 (48.7%)
Era
 1999 – 2003 156 (56.5%) 334 (61.4%) 0.179
 2004 – 2007 120 (43.5%) 210 (38.6%)

medianb
(25th – 75th )
medianb
(25th – 75th )

BMI Percentile 79.6 (54.9 – 93.6) 62.8 (34.0 – 86.3) < 0.001

N (%) N (%)

Overweight and Obese (≥85th percentile) 117 (42.4%) 142 (26.1%) < 0.001
Obese (≥95th percentile) 59 (21.4%) 65 (12.0%) < 0.001
a

= National Health and Nutrition Examination Survey;

b

=Comparisons between groups for continuous measurements summarized with median (25th – 75th) were compared using Wilcoxon Rank-Sum test