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.
The percent of children estimated to have ADHD has changed over time and can vary by how it is measured. Recent surveys of parents show that approximately 11% of children 4-17 years of age (6.4 million) have ever been diagnosed with ADHD as of 2011.