Official statistics still say that 1 in 100 people in the UK are autistic, but these figures are out of date. Official US figures from the Centers for Disease Control and Prevention (CDC – though autism is neither a disease nor should it be prevented) now say 1 in 36 but this is based on 8 year olds, and as we know all too well at Autistic Girls Network, many people are diagnosed as autistic after the age of 8. In fact 80% 0f autistic girls remain undiagnosed at age 18. Official figures in Northern Ireland are 1 in 20, and in Japan 1 in 30. Recent research in the UK points to much closer to 1 in 30 than 1 in 100. So all we can really say with certainty is that there are more than you think! This is not because autism has become more prevalent but because it has become better recognised.