Prevalence and Incidence of Autism

Prevalance of Autism:

1 in 500 to 1 in 2,500 (NIMH); 1-in-1000 to 2-in-1000, depending on diagnostic criteria ... see also overview of Autism.

Prevalance Rate:

approx 1 in 500 or 0.20% or 544,000 people in USA [Source statistic for calcuation: "1 in 500 to 1 in 2,500 (NIMH); 1-in-1000 to 2-in-1000, depending on diagnostic criteria" -- see also general information about data sources]

Ophanet, who are a consortium of European partners, currently defines a condition rare when if affects 1 person per 2,000. They list Autism as a "rare disease". More information about Autism is available from Orphanet

Incidence (annual) of Autism:

3,000 new cases in the USA 2001 (BBC News, 2002) ... see also overview of Autism.

Incidence Rate:

approx 1 in 90,666 or 0.00% or 3,000 people in USA [Source statistic for calcuation: "3,000 new cases in the USA 2001 (BBC News, 2002)" -- see also general information about data sources]

Incidence extrapolations for USA for Autism:

3,000 per year, 250 per month, 57 per week, 8 per day, 0 per hour, 0 per minute, 0 per second. [Source statistic for calculation: "3,000 new cases in the USA 2001 (BBC News, 2002)" -- see also general information about data sources]

Prevalance of Autism:

Autism affects an estimated 10 to 20 of every 10,000 people, depending on the diagnostic criteria used. Most estimates that include people with similar disorders are two to three times greater. (Source: excerpt from Autism Fact Sheet: NINDS) ... Autism affects an estimated 10 to 20 of every 10,000 people, depending on diagnostic criteria used, and strikes males about four times more often than females. (Source: excerpt from NINDS Autism Information Page: NINDS) ... Emerging in childhood, it affects about 1 or 2 people in every thousand and is three to four times more common in boys than girls. (Source: excerpt from Autism: NIMH)

Prevelance statistics for Autism:

The following statistics relate to the prevalence of Autism:

• Autism is four times more prevalent in boys than girls in the US (Autism Society of America)
• Prevalence of autism is expected to reach 4 million people in the next decade in the US (Autism Society of America)
• more statistics...»

Incidence statistics for Autism:

The following statistics relate to the incidence of Autism:

• 200-300 new cases in the USA in the 1970’s (BBC News, 2002)
• The rate of incidence of autism is increasing 10-17% per year in the US (Autism Society of America)
• more statistics...»

More Statistics about Autism:

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