Boys are four times more likely to be diagnosed with autism than girls. However, studies reveal a gender bias in diagnosing autism in girls. Girls typically exhibit symptoms of autism in vastly different ways from boys. This causes the condition to go undiagnosed or misdiagnosed in girls. A 2017 study found that, unlike previously thought, boys are about three times more likely to be diagnosed with autism than girls and that girls are at a disproportionate risk of not getting an accurate diagnosis.