1. Date of download: 7/9/2016 Copyright © 2016 American Medical Association. All rights reserved. From: Analysis of Prevalence Trends of Autism Spectrum Disorder in Minnesota Arch Pediatr Adolesc Med. 2003;157(7):622-627. doi:10.1001/archpedi.157.7.622 Number of children classified as having an autism spectrum disorder (ASD) special educational disability in Minnesota from 1981- 1982 through 2001-2002. Figure Legend:

2. Date of download: 7/9/2016 Copyright © 2016 American Medical Association. All rights reserved. From: Analysis of Prevalence Trends of Autism Spectrum Disorder in Minnesota Arch Pediatr Adolesc Med. 2003;157(7):622-627. doi:10.1001/archpedi.157.7.622 Autism spectrum disorder (ASD) prevalence among persons in Minnesota aged 21 years and younger from 1991-1992 through 2001-2002, using school enrollment or US Census Bureau data for the population at risk. Figure Legend:

3. Date of download: 7/9/2016 Copyright © 2016 American Medical Association. All rights reserved. From: Analysis of Prevalence Trends of Autism Spectrum Disorder in Minnesota Arch Pediatr Adolesc Med. 2003;157(7):622-627. doi:10.1001/archpedi.157.7.622 Autism spectrum disorder (ASD) prevalence in Minnesota by age, period, and year of birth, using US Census Bureau data for the population at risk. Black lines represent children born in the denoted year as they age over time. Figure Legend:

4. Date of download: 7/9/2016 Copyright © 2016 American Medical Association. All rights reserved. From: Analysis of Prevalence Trends of Autism Spectrum Disorder in Minnesota Arch Pediatr Adolesc Med. 2003;157(7):622-627. doi:10.1001/archpedi.157.7.622 Prevalence on a log scale of major special educational disability categories among Minnesota children aged 6 through 11 years, using US Census Bureau data for the population at risk. ASD indicates autism spectrum disorder. Figure Legend: