There is no comprehensive information available on dyslexia statistics, but by careful extrapolation of other statistics, some conclusions are surprising can be drawn.
It is important to note that with dyslexia, there is a wide baseline. It is estimated that between 5% and 15% of all people in North America have early signs of dyslexia.
This may not look like a very wide range, but when you are in the account of the American population of just over 300 million people, it's a difference of 15 to 45 million people with the disorder.
In addition to putting this in perspective, it is about the population of Texas and Tennessee-or five times the Wisconsin population.
Compared to other known neurological conditions in the United States, statistics indicate that the rate of dyslexia in the US population is higher than that of autism (2 million) and the combined ADHD (27 million).
However, it seems that dyslexia is not proportionate to these figures and does not receive funding for research that is justified by these statistics.
That said, a little less than 50% of all parents wait for a year or more so that their child is tested for dyslexia. It is a year of more frustration, sorrow, and isolation felt by a child who could benefit from a suitable diagnosis and treatment.
The statistics of Dyslexia show that about 40% of boys and 20% of girls with a dyslexic parent have dyslexia.
This information is generally not known to parents. Factor in a parent who has not diagnosed themselves and this becomes critical information for everyone.