[neverdem]

The investigators collaborated on two papers, neither of which explicitly state in the abstracts that the ADD or ADHD kids were not taking a stimulant med at the time of the study or if there was a "wash-out" time before the study.

Sleep disorders and daytime sleepiness in children with attention-deficit/hyperactive disorder.

The relationship between attention deficit hyperactivity disorder and sleep-alertness problems

Sleeping Pill Use by Youths Soars, Study Says

And about 15 percent of people under age 20 who received sleeping pills were also being given drugs to treat attention deficit and hyperactivity disorder, according to the study by Medco Health Solutions, a managed-care company that makes estimates about medication use in the whole population based on extrapolations from its own data. Drugs used to treat attention disorders can cause insomnia.

[GummyIII]

I find this very interesting. My children's pediatrician, when my older daughter's school wanted to label her ADHD at the age of 5, laughed out loud. He told me to get her in bed earlier because she needed more sleep, and to limit the sweets, foods with additives and dyes, etc. He was right. She excelled in school and was never on a drug for ADHD. This was 18 years ago. She is 23 now.