This instrument is a parent rating scale used to assess the frequency of ADHD symptoms based on DSM-IV criteria. Raw scores range from 0-54. Higher scores indicate a higher frequency of ADHD symptoms. Raw scores were used in the analyses described below.

Intention to Treat (ITT). Bayesian posterior-predictive imputation of the 8th-week follow-up assessment was used to handle missing data for a single drop-out participant who left the study after a 2nd follow-up visit.

The ABC is a behavior rating scale administered by the clinician which is designed to measure behavior changes brought about by drug treatment effects. 16 of these items comprise the hyperactivity, noncompliance factor. Each item is scored on a 3 point scale where 0 indicates the behavior is not a problem and 3 indicates the behavior problem is severe in degree. The minimum score on this factor is 0 (no behavior problems) while the maximum score is 48 ( severe behavior problems).

Intention to Treat (ITT). Bayesian posterior-predictive imputation of the 8th-week assessment was used to handle missing data for a single drop-out participant who left the study after the 2nd follow-up visit.

The ABC is a behavior rating scale administered by the clinician which is designed to measure behavior changes brought about by drug treatment effects. 15 of these items comprise the irritability/agitation/crying factor. Each item is scored on a 3 point scale where 0 indicates the behavior is not a problem and 3 indicates the behavior problem is severe in degree. The minimum score on this factor is 0 (no behavior problems) while the maximum score is 45 ( severe behavior problems).

Intention to Treat (ITT). Bayesian posterior-predictive imputation of the 8th-week follow-up assessment was used to handle missing data for a single drop-out participant who left the study after a 2nd follow-up visit.

The ABC is a behavior rating scale administered by the clinician which is designed to measure behavior changes brought about by drug treatment effects. 16 of these items comprise the lethargy/social withdrawal factor. Each item is scored on a 3 point scale where 0 indicates the behavior is not a problem and 3 indicates the behavior problem is severe in degree. The minimum score on this factor is 0 (no behavior problems) while the maximum score is 48 ( severe behavior problems).

Intention to Treat (ITT). Bayesian posterior-predictive imputation of the 8th-week follow-up assessment was used to handle missing data for a single drop-out participant who left the study after a 2nd follow-up visit.

The ABC is a behavior rating scale administered by the clinician which is designed to measure behavior changes brought about by drug treatment effects. 7 of these items comprise the stereotypic behavior factor. Each item is scored on a 3 point scale where 0 indicates the behavior is not a problem and 3 indicates the behavior problem is severe in degree. The minimum score on this factor is 0 (no behavior problems) while the maximum score is 21 ( severe behavior problems).

Intention to Treat (ITT). Bayesian posterior-predictive imputation of the 8th-week follow-up assessment was used to handle missing data for a single drop-out participant who left the study after a 2nd follow-up visit.

The ABC is a behavior rating scale administered by the clinician which is designed to measure behavior changes brought about by drug treatment effects. 4 of these items comprise the lethargy/social withdrawal factor. Each item is scored on a 3 point scale where 0 indicates the behavior is not a problem and 3 indicates the behavior problem is severe in degree. The minimum score on this factor is 0 (no behavior problems) while the maximum is 12 ( severe behavior problems).

Intention to Treat (ITT). Bayesian posterior-predictive imputation of the 8th-week follow-up assessment was used to handle missing data for a single drop-out participant who left the study after a 2nd follow-up visit.

The LPS was developed to capture treatment-related improvements in adaptive functioning including quality of life, social development, and emotion regulation. There are 24 items scored using a 4-point Likert frequency scale (0=Never or Seldom, 1=Sometimes, 2=Often, 3=Very Often). A summed scale score (possible range of 0 to 72) was used in the analyses described below. Higher scores indicate more adaptive functioning.

Intention to Treat (ITT). Bayesian posterior-predictive imputation of the 8th-week follow-up assessment was used to handle missing data for a single drop-out participant who left the study after a 2nd follow-up visit.

The Family Assessment measure is a self-report instrument that provides quantitative indices of family strengths and weaknesses. Each items is rated 0 (strongly agree) to 3 (strongly disagree). The General scale produces seven subscales: task accomplishment, role performance, communication, affective expression, involvement, control and values and norms. The minimum score for each subscale is 0 while the maximum score is 15. Higher raw scores indicate a higher number of family problems reported. A total summed score of all scale scores was used in the analyses described below. The possible range of this total score was 0 to 105. Like the subscales, higher values for this total summed score indicate a higher number of family problems reported.

Intention to Treat (ITT). Bayesian posterior-predictive imputation of the 8th-week follow-up assessment was used to handle missing data for a single drop-out participant who left the study after a 2nd follow-up visit.

The PEDI Caregiver Assistance measures rate the child's function in three domains: Self-care, Mobility, and Social Function. Items are scored 0 (total, where the child is completely dependent on assistance) to 5 (independent, where no assistance is given or required). Scale scores represent summed item scores within each domain. The Self-Care scale score ranges from 0 to 40. A higher score indicates a higher degree of independence in the self-care area.

Intention to Treat (ITT). Bayesian posterior-predictive imputation of the 8th-week assessment was used to handle missing data for a single drop-out participant who left the study after the 2nd follow-up visit.

The PEDI Caregiver Assistance measures rate the child's function in three domains: Self-care, Mobility, and Social Function. Items are scored 0 (total, where the child is completely dependent on assistance) to 5 (independent, where no assistance is given or required). Scale scores represent summed item scores within each domain. The Social-Function scale score ranges from 0 to 25. A higher score indicates a higher degree of independence in the Social-Function area.

Intention to Treat (ITT). Bayesian posterior-predictive imputation of the 8th-week assessment was used to handle missing data for a single drop-out participant who left the study after the 2nd follow-up visit.

This instrument is a teacher rating scale used to assess the frequency of ADHD symptoms based on DSM-IV criteria. Raw scores range from 0-54. Higher scores indicate a higher frequency of ADHD symptoms. Raw scores were used in the analyses described below.

Intention to Treat (ITT). Bayesian posterior-predictive imputation of the 8th-week assessment was used to handle missing data for a single drop-out participant who left the study after the 2nd follow-up visit.