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Kids born in August are diagnosed with ADHD more than kids born in September

A study compares kids in states with September 1 cutoff for kindergarten

child

MONTHS MATTER  Kids with August birthdays in states with a September 1 cutoff date for school enrollment were more likely to receive an ADHD diagnosis then September-born kids.

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By Aimee Cunningham

- More than 2 years ago

Children who turn 5 just before starting kindergarten are much more likely to be diagnosed with attention-deficit/hyperactivity disorder than their oldest classmates.