Increasing numbers of children are being diagnosed with Attention Deficit Hyperactivity Disorder (ADHD) but the condition can also be present in adults. Adults with ADHD may have difficulty in concentrating because they may be hyperactive, easily distracted, forgetful or impulsive. A survey by the World Health Organization looked into lost productivity due to ADHD surveying more than 7,000 employed or self-employed people between the ages of 18 and 44. On average 3.5% of workers had ADHD which was more prevalent in men and workers in developed, rather than developing, countries. People with ADHD were found to spend 22.1 more days not doing work than other workers, per year. This was made up of 8.4 days when they were unable to work or carry out their normal activities, plus 21.7 days of reduced work quantity and 13.6 days of reduced work quality.
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