Prevalence of childhood autism, Asperger's syndrome, other autism spectrum disorders and all autism spectrum disorders, 95% CIs, male/female ratio, cognitive level and medical conditions in an Icelandic cohort born during 1994–1998
| ASD diagnoses | Number of cases | Rate/10 000 | 95% CI lower/upper | Male/female ratio | IQ ≥70 (%) | MC (%) |
|---|---|---|---|---|---|---|
| CA | 75 | 33.7 | 26.9 to 42.3 | 2.1 | 21 (28.0) | 22 (29.3) |
| AS | 48 | 21.6 | 16.3 to 28.6 | 3 | 48 (100) | 4 (8.3) |
| Other ASD | 144 | 64.8 | 55.1 to 76.2 | 3.2 | 77 (53.5) | 20 (13.9) |
| All ASD | 267 | 120.1 | 106.6 to 135.3 | 2.8 | 146 (54.7) | 46 (17.2) |
AS, Asperger's syndrome; ASD, autism spectrum disorder; CA, childhood autism; MC, medical conditions.