A 2012 review of global prevalence estimates of autism spectrum disorders found a median of 62 cases per 10,000 people.

This last method typically produces the most reliable, and the highest, prevalence estimates.

This prevalence estimate rose 57% (95% CI 27%-95%) from 2002 to 2006.

We therefore needed to identify individuals in order to adjust the prevalence estimate for double or multiple counts.

The type of instrument used to survey the population may well influence the resultant prevalence estimate.

The study produced prevalence estimates of 4.9 per cent and 2.4 per cent respectively.

The World Health Organization has published worldwide incidence and prevalence estimates of individual disorders.

First, multiple factors can contribute to changes in prevalence estimates obtained through retrospective record review (27).

A sample of children in SLI indicated that this decision had minimal effect on prevalence estimates.

In studies of community samples of children, adolescents, and the elderly, prevalence estimates have ranged from 2% to 8%.