Welland (2011 population 50,631) is a city in the Regional Municipality of Niagara in Southern Ontario, Canada. The city is located in the centre of Niagara.
More than 5 million U.S. children, or 9.5 percent, have been diagnosed with ADHD as of 2007, according to the U.S. Centers for Disease Control and Prevention. Kids with the condition may act more impulsively, and have difficulty paying attention and controlling their behavior.
Other: placebo. This trial will compare the benefits and side effects of two medications-clonidine and methylphenidate (MPH)-used alone or in combination to treat ADHD in children. MPH is FDA-approved for the treatment of ADHD symptoms in children, and clonidine is FDA-approved for the treatment of hypertension in adults. Stimulant medications such as MPH are known to be safe and effective for the treatment of many ADHD symptoms.