Matching ODT placebo was given once daily.

Duration of effect was defined as the last time point at which NT0102 separates from placebo on SKAMP-Combined scores. A separation was defined as a statistically significant difference at the 5% level of active drug over placebo. Data was collected separately for NT0102 and Placebo arms, and is reported as a comparison analysis of the two arms. This assessment was collected on the full classroom day, Visit 8.

The SKAMP Rating Scale was comprised of 2 behavioral subscales, including the "Attention" subscale (4 items). The SKAMP-Attention subscore evaluates concentration in the classroom and is obtained by summing up each item score where each item is rated on a 7-point impairment scale (0=normal to 6=maximal impairment) for total possible combined score of 0 to 24. A lower score indicates less symptomatology (i.e. is better). The SKAMP-Attention subscores were derived from 20 minutes of direct observations of participant behavior. Ratings were based on the frequency and quality of behaviors.

The SKAMP Rating Scale is comprised of 2 behavioural subscales, including the "Deportment" subscale (4 items). The SKAMP-Deportment subscore evaluates behaviour in the classroom and is obtained by summing up each item score where each item is rated on a 7-point impairment scale (0=normal to 6=maximal impairment) for total possible combined score of 0 to 24. A lower score indicates less symptomatology (i.e. is better). The SKAMP-Attention subscores were derived from 20 minutes of direct observations of participant behaviour. Ratings were based on the frequency and quality of behaviours.

The PERMP consisted of 400 math problems and was graded as number of problems "Attempted" (PERMP-A) and number of problems "Correct." (PERMP-C). It was an objective measure of performance during the classroom testing day.

The PERMP consisted of 400 math problems and was graded as number of problems "Attempted" (PERMP-A) and number of problems "Correct." (PERMP-C). It was an objective measure of performance during the classroom testing day.

An adverse event is any untoward medical occurrence in a participant administered a pharmaceutical product and which does not necessarily have to have a causal relationship with the treatment. An adverse event can therefore be any unfavorable and unintended sign (including an abnormal laboratory finding, for example), symptom, or disease temporally associated with the use of a pharmaceutical product, whether or not considered related to the pharmaceutical product. Preexisting conditions which worsen during a study are also considered as adverse events.

After the screening/washout period, all participants received study drug NT0102 once daily for 4 weeks during the dose optimization period. After completion of the dose optimization period, the optimized dose of the study drug was selected, and participants were to stay on that dose for 1 week (dose stabilization period). At the end of this period, participants were randomized to a treatment. Participants in this arm were given placebo as matching ODT once daily for one week during the double-blind treatment period.

Total of all reporting groups

Onset of effect was defined as the first time point at which NT0102 separates from placebo on SKAMP-Combined scores. A separation was defined as a statistically significant difference at the 5% level of active drug over placebo. Data was collected separately for NT0102 and Placebo arms and is reported as a comparison analysis of the two arms. This assessment was collected on the full classroom day, Visit 8.

FAS consisted of all participants randomized to treatment who had at least 1 post-dose SKAMP-Combined treatment assessment during the classroom testing session on Visit 8. Participants were analyzed as randomized.

Duration of effect was defined as the last time point at which NT0102 separates from placebo on SKAMP-Combined scores. A separation was defined as a statistically significant difference at the 5% level of active drug over placebo. Data was collected separately for NT0102 and Placebo arms, and is reported as a comparison analysis of the two arms. This assessment was collected on the full classroom day, Visit 8.

FAS consisted of all participants randomized to treatment who had at least 1 post-dose SKAMP-Combined treatment assessment during the classroom testing session on Visit 8. Participants were analyzed as randomized.

The SKAMP Rating Scale was comprised of 2 behavioral subscales, including the "Attention" subscale (4 items). The SKAMP-Attention subscore evaluates concentration in the classroom and is obtained by summing up each item score where each item is rated on a 7-point impairment scale (0=normal to 6=maximal impairment) for total possible combined score of 0 to 24. A lower score indicates less symptomatology (i.e. is better). The SKAMP-Attention subscores were derived from 20 minutes of direct observations of participant behavior. Ratings were based on the frequency and quality of behaviors.

The per-protocol set were a subset of the FAS consisting of those participants who satisfied all of the inclusion/exclusion criteria and who correctly received the treatment to which they were randomized.

The SKAMP Rating Scale is comprised of 2 behavioural subscales, including the "Deportment" subscale (4 items). The SKAMP-Deportment subscore evaluates behaviour in the classroom and is obtained by summing up each item score where each item is rated on a 7-point impairment scale (0=normal to 6=maximal impairment) for total possible combined score of 0 to 24. A lower score indicates less symptomatology (i.e. is better). The SKAMP-Attention subscores were derived from 20 minutes of direct observations of participant behaviour. Ratings were based on the frequency and quality of behaviours.

The Per-Protocol Set were a subset of the FAS consisting of those participants who satisfied all of the inclusion/exclusion criteria and who correctly received the treatment to which they were randomized.

The PERMP consisted of 400 math problems and was graded as number of problems "Attempted" (PERMP-A) and number of problems "Correct." (PERMP-C). It was an objective measure of performance during the classroom testing day.

FAS consisted of all participants randomized to treatment who had at least 1 post-dose SKAMP-Combined treatment assessment during the classroom testing session on Visit 8. Participants were analyzed as randomized.

The PERMP consisted of 400 math problems and was graded as number of problems "Attempted" (PERMP-A) and number of problems "Correct." (PERMP-C). It was an objective measure of performance during the classroom testing day.

FAS consisted of all participants randomized to treatment who had at least 1 post-dose SKAMP-Combined treatment assessment during the classroom testing session on Visit 8. Participants were analyzed as randomized.

An adverse event is any untoward medical occurrence in a participant administered a pharmaceutical product and which does not necessarily have to have a causal relationship with the treatment. An adverse event can therefore be any unfavorable and unintended sign (including an abnormal laboratory finding, for example), symptom, or disease temporally associated with the use of a pharmaceutical product, whether or not considered related to the pharmaceutical product. Preexisting conditions which worsen during a study are also considered as adverse events.

The safety population included all participants who took at least 1 dose of study drug.

At the end of the stabilization period, participants were randomized to a treatment. Participants in this arm were given placebo as matching ODT once daily for one week during the double-blind treatment period.

At the end of the stabilization period, participants were randomized to a treatment. Participants in this arm were given 20-60 mg of NT0102 as ODT once daily for one week during the double-blind treatment period.