Comparison of Atomoxetine Versus Placebo in Children With Attention-Deficit/Hyperactivity Disorder (ADHD)

Infra-red camera tracks movement of head reflector on patient performing computer test. Hyperactivity test variables: TA=percent time patient moved>1 centimeter (cm)/second; DIS=path of movement (m); AR=total area (cm2) of movements; ME=number of position changes>1 mm; MS=degree (percent) of directional changes. Results are converted to Q-scores (age and sex-adjusted normalized scores with a mean=0 and standard deviation (SD)=1 in general population, expressing the probability determined by the Gamma function in terms of SD of Gaussian density). Higher scores reflect more severe symptoms.

Computer test. Patient is to press button if target appears, but not at non-target. Inattention test variables: mRT=average time (ms) from target presentation to response; RTV=standard deviation of mRT; nVRT=RTV expressed in terms of RT (variation as a percent of mean value); OE= percent of omitted targets. Results are converted to Q-scores (age and sex-adjusted normalized scores with a mean=0 and SD=1 in the general population, expressing the probability determined by the Gamma function in terms of SD of Gaussian density). Higher scores reflect more severe symptoms.

Computer test. Patient is to press button if target appears, but not at non-target. Impulsivity variables during test: CE=percent of response to non-target; ANT=percent of responses prior to target presentation. Results are converted to Q-scores (age and sex-adjusted normalized scores with a mean=0 and standard deviation=1 in the general population, expressing the probability determined by the Gamma function in terms of standard deviation of Gaussian density). Higher scores reflect more severe symptoms.

Computer test. Patient is to press button if target appears, but not at non-target. Other variables during test: ER=percent of overall incorrect responses (CE and OE); MR=percent of multiple responses per presentation of target (patient responds more than once to target). Results are converted to Q-scores (age and sex-adjusted normalized scores with a mean=0 and standard deviation=1 in the general population, expressing the probability determined by the Gamma function in terms of standard deviation of Gaussian density). Higher scores reflect more severe symptoms.

Measures the 18 symptoms contained in the Diagnostic and Statistical Manual of Mental Disorders Fourth Edition, Text Revision (DSM-IV-TR) diagnosis of Attention-Deficit/Hyperactivity Disorder. Individual item scores range from 0 (none/never or rarely) to 3 (severe/very often). Total scores range from 0 to 54.

CGI-S-ADHD measures severity of the patient's overall severity of ADHD symptoms (1=normal, not at all ill; 7=among the most extremely ill patients).

Weekly Rating Of Evening & Morning Behavior-Revised-Investigator Rated (WREMB-R-Inv) measures the level of difficulty of 11 common morning or evening behaviors (e.g. getting out of bed, doing homework, sitting through dinner). Possible scores for each item range from 0 (no difficulty) to 3 (a lot of difficulty) with a Total score (maximum score=33), Morning subscore (maximum score=9), Evening subscore (maximum score=24), and Item 11 score which pertains to degree of difficulty falling asleep (maximum score=3).