Epidemiology of autism information

Autism prevalence countries reported, but all over the world are there is a clear upward trend in recent years. By Fombonne 2003 summary information, 1966 autism prevalence rate is 4.3/~1991 year, and reach 12.7/1992 ~2001 years. Causing rising prevalence rates may be many, such as diagnostic criteria changes, increased public awareness of the disease, early diagnosis, and so on. Currently recognized reasonable data that autism prevalence is 10/. 1982 first reported 4 cases of autism in children Tao Guotai in China, Tianjin a 5,000 years old 2001 sample survey results showed children aged ~6: autism prevalence is 0.1%. The significant difference in the incidence of men and women, men and women about 2.6:1~5.7:1. More disparities in prevalence ratio of men and women in our country, male: female 6:1~9:1. Average found in children with autism are located in the high, low, and in all social strata.