Children with autism who are older than 13 years and have low intelligence are at the greatest risk of having epilepsy, according to one of the largest epidemiological studies on the issue to date, published 4 July in PLoS One.

Latino children with autism are diagnosed an average of a year later than their white peers and receive fewer services, reports the June issue of Intellectual and Developmental Disabilities.

A new database pools health registry data from seven countries, dramatically boosting sample sizes for epidemiological studies of autism.

Iceland’s autism prevalence of 1.2 percent is on par with that of other countries, according to a study published 20 June in BMJ Open.

A global approach to understanding autism that respects the uniqueness of different communities is not a choice, but a necessity, says Mayada Elsabbagh.

Autism prevalence in three regions of eastern Canada rose by as much as 15 percent in less than a decade, but only part of that increase may be genuine, according to a report published 16 June in the Journal of Autism and Developmental Disorders.

Few studies of autism prevalence have been conducted in low- and middle-income countries. Freely available screening and diagnostic tools could help address this disparity.

Discrepancies in global wealth create hurdles for autism diagnosis, treatments and cross-cultural research. How can open-access tools fix the problem?

Cultural factors may explain why attention deficit hyperactivity disorder is diagnosed less frequently in the U.K. than in the U.S., and autism more frequently, suggests a study published 30 May in the Journal of Autism and Developmental Disorders.

A parent phone survey conducted by the Centers for Disease Control and Prevention to assess autism rates may have overestimated the prevalence of the disorder in the U.S., says Craig Newschaffer.