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Hundreds of thousands of women with autism may be going undiagnosed because it's a 'male disorder' - CBC
Happé told Quirks & Quarks that overlooked female autistics tend to be "high functioning" and without intellectual impairments.
But most still struggle with things like social interactions, sensory information and behavioural problems that are frequently mistaken for other maladies, or simply ignored.
[...]
In 2017, a group of researchers from University College London in the UK published an epidemiological study in an attempt to find the true male-to-female ratio in autism spectrum disorder (ASD). Autism is more common in males, but how much more common was a matter of some dispute.
The group reviewed 54 studies that included 14 million participants aimed at identifying individuals with autism.
But they found a discrepancy. Different methods predicted quite different numbers for the frequency of autism in women. The discrepancy came from how autism cases are identified in studies, said Dr. Happé.
Some studies simply compared numbers of individuals who had been diagnosed with autism. These studies found that there was about one autistic woman diagnosed for every four autistic men.
Another approach used active screening. Researchers would interview an entire cohort of people. and identify those who might have the condition and follow up with them later. This method captured people who hadn't been diagnosed, and revealed a previously unknown population of autistic women.