TABLE 2. Estimated prevalence* of autism spectrum disorder among 1,000 children aged 8 years, by sex — Autism and Developmental Disabilities Monitoring Network, 11 Sites, United States, 2012.
| Site | Total | Total no. with ASD | Sex |
Male-to-female prevalence ratio† | ||
|---|---|---|---|---|---|---|
| Total† |
Male |
Female |
||||
| Prevalence (95% CI) | Prevalence (95% CI) | Prevalence (95% CI) | ||||
| Arizona |
32,615
|
494
|
15.2
(13.9–16.5)
|
24.2 (22.0–26.7) |
5.7 (4.7–7.0) |
4.2 (3.4–5.3) |
| Arkansas |
14,153
|
170
|
12.0
(10.3–14.0)
|
19.2 (16.3–22.7) |
4.6 (3.2–6.5) |
4.2 (2.9–6.2) |
| Colorado |
40,538
|
436
|
10.8
(9.8–11.8)
|
17.1 (15.4–19.0) |
4.2 (3.4–5.2) |
4.1 (3.2–5.2) |
| Georgia |
49,720
|
771
|
15.5
(14.4–16.6)
|
25.6 (23.7–27.6) |
5.2 (4.3–6.1) |
4.9 (4.1–6.0) |
| Maryland§ |
9,577
|
174
|
18.2
(15.7–21.1)
|
29.4 (25.0–34.6) |
6.2 (4.3–9.0) |
4.7 (3.2–7.0) |
| Maryland¶ |
18,154
|
148
|
8.2
(6.9–9.6)
|
13.9 (11.7–16.5) |
2.2 (1.4–3.5) |
6.3 (3.9–10.0) |
| Missouri |
25,870
|
297
|
11.5
(10.2–12.9)
|
18.9 (16.7–21.4) |
3.8 (2.8–5.0) |
5.0 (3.7–6.8) |
| New Jersey |
32,581
|
800
|
24.6
(22.9–26.3)
|
39.1 (36.2–42.2) |
9.3 (7.9–10.9) |
4.2 (3.5–5.0) |
| North Carolina |
38,913
|
656
|
16.9 (15.6,
18.2)
|
27.5 (25.3, 29.9) |
6.0 (5.0, 7.2) |
4.6 (3.8–5.6) |
| South Carolina |
24,356
|
302
|
12.4
(11.1–13.9)
|
19.9 (17.6–22.5) |
4.6 (3.5–6.0) |
4.3 (3.2–5.8) |
| Utah |
24,945
|
431
|
17.3
(15.7–19.0)
|
27.7 (24.9–30.7) |
6.4 (5.1–8.0) |
4.3 (3.4–5.5) |
| Wisconsin |
35,556
|
384
|
10.8
(9.8–11.9)
|
17.2 (15.4–19.2) |
4.1 (3.2–5.2) |
4.2 (3.2–5.4) |
| Total | 346,978 | 5,063 | 14.6 (14.2–15.0) | 23.6 (22.9–24.3) | 5.3 (4.9, 5.6) | 4.5 (4.2–4.8) |
Abbreviations: ASD = autism spectrum disorder; CI = confidence interval; E+H = education plus health.
*Per 1,000 children aged 8 years.
†All sites identified significantly higher prevalence among males compared with females (Pearson chi-square, p<0.01).
§Education and health records review area.
¶Health records only review area.