TABLE 3. Availability and distribution of intelligence quotient scores among children aged 8 years with autism spectrum disorder — Autism and Developmental Disabilities Monitoring Network, 10 sites,† United States, 2016.
| Site | Total no. with ASD | With IQ information |
Cognitive level* |
||
|---|---|---|---|---|---|
| No. (%) | IQ <70 (%) | IQ 71–85 (%) | IQ >85 (%) | ||
| Arizona |
282 |
256 (90.8) |
25.4 |
30.1 |
44.5 |
| Arkansas |
606 |
582 (96.0) |
38.3 |
23.0 |
38.1 |
| Colorado |
537 |
406 (75.6) |
32.0 |
22.2 |
45.8 |
| Georgia |
456 |
383 (84.0) |
41.8 |
20.9 |
37.1 |
| Maryland |
192 |
124 (64.6) |
34.7 |
25.8 |
38.7 |
| Minnesota |
313 |
283 (90.4) |
24.7 |
19.8 |
54.1 |
| New Jersey |
1,036 |
736 (71.0) |
24.6 |
27.9 |
47.4 |
| North Carolina |
489 |
443 (90.6) |
34.1 |
20.8 |
44.9 |
| Tennessee |
405 |
310 (76.5) |
41.0 |
30.3 |
27.7 |
| Wisconsin |
579 |
374 (64.6) |
40.4 |
21.7 |
38.0 |
| Total | 4,895 | 3,897 (79.6) | 33.4 | 24.1 | 42.1 |
Abbreviation: ASD = autism spectrum disorder; IQ = intelligence quotient.
* Levels of intellectual functioning might not always sum to exactly 100% because 15 children (three in Arkansas, one in Georgia, one in Maryland, four in Minnesota, one in North Carolina, one in New Jersey, and three in Tennessee) had evidence of IQ >70 (i.e., examiner statement) but without sufficient detail to be assigned to either the IQ 71–85 or IQ >85 categories.
† Missouri is not included because it did not collect IQ information on at least 60% of children with ASD.