Atomoxetine has signifi superior efficacy to placebo in treating adult ADHD as rated on investigator ratings of adult ADHD. The efficacy of atomoxetine is superior to placebo in treating both inattention and hyperactivity/impulsivity. Atomoxetine is significantly more efficacious in treating inattention than hyperactivity/impulsivity. Response rates could not be calculated, however most studies report about 60% response rates for 25% drop in ADHD scores.