Gau 2010.

Trial name or title	The influence of using methylphenidate on the coming up of psychiatric disorders in children with ADHD
Methods	Database study of children with new onset ADHD between 1999 and 2003 and age‐ and sex‐matched healthy controls
Participants	2109 children (aged > 18 years) with onset of ADHD. Type of ADHD not stated. Mean onset age of 7.3 years, 79.8% were males
Interventions	Methylphenidate, type not stated
Outcomes	Incidence of other comorbid psychiatric disorders (i.e. depression, bipolar disorder, dysthymia, anxiety, conduct disorder and oppositional defiant disorder)
Starting date	Not found
Contact information	Dr Churn‐Shiouh Gau Email: csgau206@cde.org.tw
Notes	Correspondence with authors in October 2013: no publications yet (Gau 2013b [pers comm])