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. Author manuscript; available in PMC: 2022 Aug 1.
Published in final edited form as: J Autism Dev Disord. 2021 Aug;51(8):2950–2958. doi: 10.1007/s10803-020-04704-z

Table 2.

Distribution of sociodemographic and socioeconomic characteristics in MEPS by source of case ascertainment, U.S. children ages 3–17 years

Total population age 3–17
NHIS Any ASD
MEPS Any ASD
N Weighted %a 95% CI N Weighted % 95% CI N Weighted % 95% CI
Gender
 Male 23,596 51.0 (50.2–51.8) 356 81.9 (76.2–87.6) 293 82.2 (76.4–87.9)
 Female 22,348 49.0 (48.2–49.8) 79 18.1 (12.4–23.8) 67 17.8 (12.1–23.6)
Age
 Age 3–7 16,210 32.8 (32.2–33.5) 111 20.5 (15.5–25.4) 137 32.6 (25.7–39.5)
 Age 8–12 14,345 33.1 (32.3–33.8) 179 43.2 (36.5–49.9) 120 34.1 (27.0–41.2)
 Age 13–17 15,389 34.1 (33.4–34.8) 145 36.3 (29.0–43.7) 103 33.3 (25.8–40.8)
Race/Ethnicity
 Hispanic 15,970 21.8 (20.2–23.4) 106 15.0 (10.5–19.5) 87 15.3 (10.5–20.1)
 Non-Hispanic White 16,682 55.2 (53.6–56.9) 202 63.9 (57.0–70.8) 176 66.2 (59.0–73.4)
 Non-Hispanic Black 9011 14.4 (13.3–15.4) 78 12.8 (8.5–17.2) 61 11.5 (7.4–15.6)
 Non-Hispanic Asian 2272 4.2 (3.8–4.7) 17 3.2 (0.9–5.5) 13 2.2 (0.6–3.9)
 Non-Hispanic Other 2009 4.3 (3.8–4.9) 32 5.0 (2.0–7.9) 23 4.8 (1.8–7.7)
Poverty Status
 Poor 12,417 19.1 (18.2–20.0) 102 17.8 (13.0–22.5) 83 16.4 (11.8–20.9)
 Near poor 3414 5.6 (5.3–5.8) 42 7.2 (4.2–10.3) 35 7.4 (4.7–10.1)
 Low income 8485 16.0 (15.5–16.5) 73 14.3 (9.8–18.8) 58 15.6 (10.0–21.1)
 Middle income 12,415 31.8 (30.9–32.6) 123 31.2 (24.9–37.6) 107 33.1 (26.0–40.3)
 High income 9213 27.6 (26.5–28.7) 95 29.4 (22.3–36.5) 77 27.6 (20.4–34.7)
Highest Education in Family
 Less than high school 7409 10.1 (9.5–10.7) 48 8.0 (4.2–11.7) 37 6.8 (3.3–10.3)
 High school graduate 13,542 26.3 (25.5–27.2) 103 21.6 (15.6–27.5) 82 21.7 (15.4–28.0)
 Some college 12,559 28.7 (27.9–29.5) 122 25.0 (18.6–31.5) 117 31.6 (24.4–38.8)
 Bachelors 7536 20.6 (19.8–21.3) 87 24.8 (17.7–32.0) 69 23.9 (16.5–31.2)
 Post-graduate 4898 14.4 (13.6–15.2) 75 20.5 (13.7–27.4) 55 15.9 (10.3–21.6)
Census Region
 North 6979 17.0 (15.9–18.1) 77 18.1 (12.2–24.0) 65 19.7 (13.3–26.2)
 Midwest 8814 21.5 (20.4–22.7) 96 26.3 (18.8–33.9) 84 27.2 (19.1–35.2)
 South 17,477 37.2 (35.7–38.7) 133 27.9 (21.2–34.7) 118 31.0 (23.9–38.1)
 West 12,674 24.2 (22.9–25.6) 129 27.6 (19.4–35.9) 93 22.1 (15.7–28.5)
Metropolitan Statistical Area (MSA)
 MSA 39,337 84.7 (82.9–86.4) 386 85.9 (80.3–91.5) 316 86.4 (80.6–92.3)
 Non-MSA 6607 15.3 (13.6–17.1) 49 14.1 (8.5–19.7) 44 13.6 (7.7–19.4)
 Total 45,944 100.0 435 100.0 365 100.0

Source: Authors’ estimates from MEPS 2003–2015 linked to NHIS Sample Child Core 2001–2014.

ASD autism spectrum disorder; CI confidence interval; MEPS Medical Expenditure Panel Survey; NHIS National Health Interview Survey

a

MEPS person-level weights adjusted for non-response to the NHIS Sample Child Core questionnaire applied and then averaged over the pooled time period