TABLE 1. Prevalence* of autism spectrum disorder among children aged 8 years, overall and by sex — Autism and Developmental Disabilities Monitoring Network, 11 sites, United States, 2016.
| Site | Overall† |
Male |
Female |
Male-to-female prevalence ratio (95% CI)§ | |||
|---|---|---|---|---|---|---|---|
| Description of surveillance area | No. with ASD | Total population | Prevalence (95% CI) | Prevalence (95% CI) | Prevalence (95% CI) | ||
| Arizona |
Part of one county in metropolitan Phoenix† |
282 |
17,656 |
16.0 (14.2–17.9) |
25.4 (22.4–28.9) |
6.0 (4.6–7.9) |
4.2 (3.1–5.7) |
| Arkansas |
All 75 counties in Arkansas |
606 |
40,225 |
15.1 (13.9–16.3) |
24.3 (22.3–26.5) |
5.4 (4.5–6.5) |
4.5 (3.7–5.5) |
| Colorado |
Seven counties in metropolitan Denver |
537 |
40,874 |
13.1 (12.1–14.3) |
21.2 (19.3–23.2) |
4.7 (3.9–5.8) |
4.5 (3.6–5.6) |
| Georgia |
Two counties in metropolitan Atlanta |
456 |
24,113 |
18.9 (17.3–20.7) |
30.4 (27.5–33.6) |
7.1 (5.7–8.7) |
4.3 (3.4–5.4) |
| Maryland |
One county in metropolitan Baltimore |
192 |
9,993 |
19.2 (16.7–22.1) |
30.1 (25.8–35.2) |
7.8 (5.7–10.7) |
3.9 (2.7–5.5) |
| Minnesota |
Parts of two counties including Minneapolis–St. Paul |
313 |
13,728 |
22.8 (20.4–25.4) |
36.3 (32.1–41.0) |
9.2 (7.2–11.8) |
3.9 (3.0–5.2) |
| Missouri |
Two counties in metropolitan St. Louis |
213 |
15,635 |
13.6 (11.9–15.6) |
21.1 (18.1–24.5) |
6.2 (4.6– 8.1) |
3.4 (2.5–4.7) |
| New Jersey |
Four counties including metropolitan Newark |
1,036 |
33,031 |
31.4 (29.5–33.3) |
50.0 (46.8–53.4) |
12.0 (10.4–13.8) |
4.2 (3.6–4.9) |
| North Carolina |
Four counties in central North Carolina |
489 |
19,291 |
25.3 (23.2–27.7) |
41.2 (37.5–45.3) |
8.7 (7.0–10.8) |
4.7 (3.7–6.0) |
| Tennessee |
11 counties in middle Tennessee |
405 |
25,839 |
15.7 (14.2–17.3) |
25.5 (22.9–28.3) |
5.5 (4.4–7.0) |
4.6 (3.6–6.0) |
| Wisconsin |
10 counties in southeastern Wisconsin |
579 |
35,034 |
16.5 (15.2–17.9) |
26.3 (24.0–28.7) |
6.3 (5.2–7.6) |
4.2 (3.4–5.2) |
|
Total
|
5,108 | 275,419 | 18.5 (18.0–19.1) | 29.7 (28.8–30.6) | 6.9 (6.5–7.4) | 4.3 (4.0–4.6) | |
Abbreviations: ASD = autism spectrum disorder; CI = confidence interval.
* Per 1,000 children aged 8 years.
† All children are included in the total regardless of sex or race/ethnicity.
§ Wilson score 95% CIs exclude 1.0 in all sites, indicating significantly higher prevalence among males than among females.