DSM-IV, Diagonostic and Statistical manual of mental disorders reports
- prevalence of autism to be 2 to 5 cases per 10,000 people
there are now more individuals with autism than with Down's syndrome or blindness, which the statistics have been reported range from 2 per 10,000 to as high as 11.6 per 10,000.
9 affected individuals with PDDs ( pervasive developmental disorders) per 1,000 births.
In the United Kingdom, a prevalence rate of 62.6 per 10,000 ( or 5 to 6 per 1,000) was determined for ASDs. ( ASD is the 5 subcategorical diagnoses that encompass the domain of a PDD: autistic disorder, childhood disintegrative disorder, Rett's disorder, Asperger syndrome, and pervasive developmental disorder)
16.8 per 10,000 ( or nearly 2 per 1,000) of individuals with autistic disorder, with the remaining 45.8 per 10,000 have a range of PDDs.
- 26 percent occurrence rate (comorbidity) of mental retardation with a PDD.
These statistics are providing how there are many individuals with ASD in our society and how it is growing so much. Only greater society will be created when society could use them with higher priority.