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 study's authors tracked U.S. prescription data from 1996 to 2008. They found the use of ADHD drugs was the highest among kids aged 6 to 12, rising slightly from 4.2 percent in 1996 to 5.1 percent 12 years later. The most pronounced rise was in older children aged 13 to 18, however. In that group, use of ADHD drugs more than doubled -- from 2.3 percent in 1996 to 4.9 percent in 2008.