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A comment on When starting school, younger children are more likely to be diagnosed with ADHD. Parent comment

Re:When starting school, younger children are more likely to... by trevyn on Thursday November 29, 2018 @04:52PM (#18564438)
>To have a diagnosis of ADHD, there must have been symptoms before the age of 7

FWIW, in the DSM-5, that was changed to age 12.

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Re:When starting school, younger children are more likely to... by dragonwriter on Thursday November 29, 2018 @05:04PM (#18564542)
This study straddles the time when the DSM-5 was published and came into general use, and in any case it didn't follow kids past age 6-8 depending on birth year, so that part of the change in criteria probably isn't relevant to the results.
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