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.
More than half of the children diagnosed with ADHD have at least one other disorder, and according to community based-sampling, between 23% and 43% have two or more additional disorders (August, Realmuto, MacDonald, Nuget, & Crosby, 1996; Romano, Tremblay, Vitaro, Zoccolillo, & Pagani, 2005; Szatmari, Oxford, & Boyle, 1989).