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. Author manuscript; available in PMC: 2022 Jul 1.
Published in final edited form as: J Autism Dev Disord. 2021 Jul;51(7):2241–2253. doi: 10.1007/s10803-020-04667-1

Table 2:

Basic characteristics of the study population (N= 3,031)

N (%) or Mean (SD)

Cohort Source Population
 ASD familial enriched risk 257 (8.5%)
 ASD non-familial enriched risk 677 (22.3%)
 General population 2,097 (69.2%)
Maternal race/ethnicity
 Hispanic 256 (8.5%)
 Non-Hispanic White 2,212 (73.0%)
 Non-Hispanic Black 280 (9.2%)
 Non-Hispanic Other 180 (6.3%)
 Missing 103 (3.4%)
Maternal education
 ≤ High school degree 520 (17.2%)
 Some college 585 (19.3%)
 ≥ Bachelor’s degree 1,856 (61.2%)
 Missing 70 (2.3%)
Parity
 No prior child 1,324 (43.7%)
 ≥ 1 prior child 1,580 (52.1%)
 Missing 127 (4.2%)
Neurodevelopmental Outcomes
 ASD diagnosis 190 (6.3%)
 No ASD 2,233 (73.7%)
 Missing ASD diagnostic information2 608 (20.1%)
 Other non-ASD neurodevelopmental or psychiatric condition1 621 (27.8%)
 Maternal age3 31.3 (5.8)
 Paternal age3 33.6 (6.1)
 Child age at SRS in years 7.4 (4.9)
 Gestational age3 35.8 (5.8)

Abbreviations: ASD, Autism Spectrum Disorder; SRS, Social Responsiveness Scale

1

Other condition including: Intellectual disability, non-verbal disability, ADD or ADHD, learning disability, anxiety, depression, language disability. Includes 94 individuals with ASD diagnosis. Percent totals do not sum to 100 due to overlap between groups.

2

These individuals were not included in ROC analyses.

3

Number of individuals with missing values: maternal age (n=31); paternal age (n=909); gestational age (n=46)