Table 1.
Characteristics of 8-year-old children with autism spectrum disorder identified in 5 sites in the Autism and Developmental Disabilities Monitoring Network, 2002-2010a
| Characteristic | No. (%) | |||
|---|---|---|---|---|
| 2002 | 2006 | 2008 | 2010 | |
| (n = 849) | (n = 1334) | (n = 1743) | (n = 2084) | |
| Sex | ||||
| Male | 697 (82.1) | 1106 (83.0) | 1460 (83.8) | 1735 (83.2) |
| Female | 152 (17.9) | 228 (17.0) | 283 (16.2) | 349 (16.8) |
| Site | ||||
| Arizona | 268 (31.6) | 479 (35.9) | 477 (27.4) | 485 (23.3) |
| Colorado | 54 (6.4) | 38 (2.9) | 69 (4.0) | 45 (2.2) |
| Georgia | 300 (35.3) | 414 (31.0) | 543 (31.2) | 628 (30.1) |
| Maryland | 122 (14.4) | 198 (14.9) | 226 (13.0) | 380 (18.2) |
| North Carolina | 105 (12.4) | 205 (15.4) | 428 (24.6) | 546 (26.2) |
| Race/ethnicity | ||||
| Non-Hispanic white | 507 (59.7) | 756 (56.7) | 926 (53.1) | 1092 (52.4) |
| Non-Hispanic black | 224 (26.4) | 293 (22.0) | 443 (25.4) | 504 (24.2) |
| Non-Hispanic other | 35 (4.1) | 90 (6.8) | 141 (8.1) | 191 (9.2) |
| Hispanic | 83 (9.8) | 195 (14.6) | 233 (13.4) | 297 (14.3) |
| Special education eligibility | ||||
| Autism | 486 (57.2) | 771 (57.8) | 1082 (62.1) | 1331 (63.9) |
| Developmental delay | 3 (0.4) | 51 (3.9) | 99 (5.7) | 180 (8.7) |
| Emotional disturbance | 52 (6.1) | 55 (4.1) | 68 (3.9) | 64 (3.1) |
| Hearing or visual impairments | 1 (0.1) | 3 (0.2) | 1 (0.1) | 3 (0.1) |
| Intellectual disability | 93 (11.0) | 123 (9.2) | 115 (6.6) | 94 (4.5) |
| Multiple disabilities | 17 (2.0) | 28 (2.1) | 27 (1.6) | 38 (1.8) |
| Orthopedic impairments | 11 (1.3) | 9 (0.7) | 19 (1.1) | 9 (0.4) |
| Other | 0 | 0 | 1 (0.1) | 0 |
| Other health impairmentb | 50 (5.9) | 106 (8.0) | 106 (6.1) | 142 (6.8) |
| Specific learning disabilities | 61 (7.2) | 86 (6.5) | 116 (6.7) | 128 (6.1) |
| Speech or language impairments | 75 (8.8) | 102 (7.7) | 108 (6.2) | 95 (4.6) |
| Traumatic brain injury | 0 | 0 | 1 (0.1) | 0 |