Table 1.
Overview of record-linkages to national and regional registers in the Stockholm Youth Cohort.
Table 2.
Prevalence of autism spectrum disorders with and without intellectual disability in 2007, by sex and age.
Figure 1.
The year 2007 prevalence of autism spectrum disorders (ASD) in the Stockholm Youth Cohort.
Points indicate the observed prevalence (cases per 1,000) for each age (4–23 years). An empirical mode decomposition smoothing curve is superimposed. A) ASD prevalence with or without co-morbid intellectual disability B) ASD prevalence by gender C) ASD prevalence by gender with or without co-morbid intellectual disability.
Table 3.
Confirmation of autism spectrum disorder diagnosis, with and without intellectual disability, by sex and age, according to case-notes in a random sample of 177 cases in the Stockholm Youth Cohort.