The incidence of autism is similar in boys and girls, although boys are diagnosed earlier
A study published in The BMJ suggests that the incidence of autism spectrum disorder (ASD) is comparable between boys and girls. The study included a sample of more than 2.7 million people born in Sweden between 1985 and 2020 who were followed from birth to a maximum age of 37. More than 78,000 were diagnosed with ASD. It was observed that boys are usually diagnosed between the ages of 10 and 14, five years earlier than girls. By the age of 20, the proportion of diagnoses is almost equal between the sexes. Before the age of 10, the ratio is 3:1 in favour of boys.
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