The ADHD portal was a web-based platform that permits access to parts of the hospital's electronic health record. The portal permits (1) capture and sharing of patient and family treatment preferences and goals, (2) monitoring of ADHD symptoms, treatment receipt, and side effects, and (3) assessing goal attainment. The system prompts for completion of periodic check-in surveys (bi-weekly to 3 months) with parents and teachers. Within the portal, preferences and goals for ADHD treatment were measured using the ADHD Preference Goal Instrument (PGI) (Fiks et al., 2012). Parents were encouraged to consult with their children when completing the tool.

Using responses from the Services Assessment for Children and Adolescents (SACA), a well-validated client-reported tool and provides information on any mental health services use, ambulatory services use, and inpatient service use, we determined (yes/no) whether participants ever received educational services, mental health services, or medications for ADHD. Parents reported whether their children used services ever or within the last nine months. Treatment initiation was measured by use of services ever. Categorizations include any service use, ambulatory service use (any community mental health or outpatient clinic, private professional, or in-home provider), and overnight stay (psychiatric or medical unit, residential treatment center, group home, or foster home). The time range of 9-12 given for Visit 4 reflects the time range counted as a single value.

Using responses from the Services Assessment for Children and Adolescents (SACA), a well-validated client-reported tool and provides information on any mental health services use, ambulatory services use, and inpatient service use, we determined (yes/no) whether participants ever received educational services, mental health services, or medications for ADHD. Parents reported whether their children used services ever or within the last nine months. Treatment adherence was measured by use of services in the past nine months. Categorizations include any service use, ambulatory service use (any community mental health or outpatient clinic, private professional, or in-home provider), and overnight stay (psychiatric or medical unit, residential treatment center, group home, or foster home). The time range of 9-12 given for Visit 4 reflects the time range counted as a single value.

School Performance is a 5-item domain (minimum score=1, maximum score=5 on a 5 point Likert scale) of the of 30-item Child- (age 8-12) and 17-item Parent Patient Reported Outcomes Scores (PROS). The minimum total score for the School Performance domain is 5 and the maximum total score is 25 (total scores are not shown below). Values in the table below are reported as mean scores at each time point and therefore fall between the minimum score of 1 and maximum score of 5. Higher scores indicate better outcomes. Parent-reported PRO and child-reported PRO measures were averaged for each domain for each time point. School performance PRO scores were measured at baseline (Visit 1), 3 months (Visit 2), 6 months (Visit 3), and 9-12 months (Visit 4). The time range given for Visit 4 reflects the time range counted as a single value.

Student Engagement is a 4-item domain (minimum score=1, maximum score=5 on a 5 point Likert scale) of the of 30-item Child- (age 8-12) and 17-item Parent Patient Reported Outcomes Scores (PROS). The minimum total score for the Student Engagement domain is 4 and the maximum total score is 20 (total scores are not shown below). Values in the table below are reported as means at each time point and therefore fall between the minimum score of 1 and maximum score of 5. Higher scores indicate better outcomes. Parent-reported PRO and child-reported PRO measures were averaged for each domain for each time point. Student Engagement PRO scores were measured at baseline (Visit 1), 3 months (Visit 2), 6 months (Visit 3), and 9-12 months (Visit 4). The time range given for Visit 4 reflects the time range counted as a single value.

Teacher Connectedness is a 9-item domain (minimum=1, maximum=5 on a 5 point Likert scale) of the of 30-item Child- (age 8-12) and 17-item Parent Patient Reported Outcomes Scores (PROS). The minimum total score for the Teacher Connectedness domain is 9 and the maximum total score is 45 (total scores not shown below). Values in the table below are reported as means at each time point and therefore fall between the minimum score of 1 and maximum score of 5. Higher scores indicate better outcomes. Parent-reported PRO and child-reported PRO measures were averaged for each domain for each time point. Teacher Connectedness PRO scores were measured at baseline (Visit 1), 3 months (Visit 2), 6 months (Visit 3), and 9-12 months (Visit 4). The time range given for Visit 4 reflects the time range counted as a single value.

Peer Relationships is a 6-item domain (minimum=1, maximum=5, on a 5 point Likert scale) of the of 30-item Child- (age 8-12) and a 7-item domain (minimum=1, maximum=5 on a 5 point Likert scale) of the 17-item Parent Patient Reported Outcomes Scores (PROS). The minimum total score is 6 and the maximum total score is 30 on the Child PROs. The minimum total score for the Peer Relationships domain is 7 and the maximum total score is 35 on the Parent PROs. Total scores not shown below. Values in the table below are reported as means at each time point and therefore fall between the minimum score of 1 and maximum score of 5. Parent-reported PRO and child-reported PRO measures were averaged for each domain for each time point. Higher scores indicate better outcomes. Peer Relationships PRO scores were measured at baseline (Visit 1), 3 months (Visit 2), 6 months (Visit 3), and 9-12 months (Visit 4). The time range given for Visit 4 reflects the time range counted as a single value.

Family Relationships is a 6-item domain (minimum=1, maximum=5 on a 5 point Likert scale) of the 30-item Child- (age 8-12) Patient Reported Outcomes Measures of relationships with other family members over the past 4 weeks. The minimum total score for the Family Relationships domain is 6 and the maximum total score is 30 (total scores not shown below). Values in the table below are reported as means at each time point and therefore fall between the minimum score of 1 and maximum score of 5. Child-reported PRO measures were averaged for each domain for each time point. Higher scores indicate better outcomes. Family Relationships PRO scores were measured at baseline (Visit 1), 3 months (Visit 2), 6 months (Visit 3), and 9-12 months (Visit 4). The time range given for Visit 4 reflects the time range counted as a single value.

The Engagement Measure is a 28-item parent self-report measure comprised of four domains: Access (5-items, total score range 5-25), Patient Family Centered Care or PFCC (6-items, total score range 6-30), Communication (3-items, total score range 3-15), and Understanding (5-items, total score range 5-25). Total scores are not reported below. Scores for each individual item and therefore the mean for each domain (means reported in the table below) ranged from 1-5 with higher scores indicating greater engagement. The time range given for Visit 4 reflects the time range counted as a single value.

In this arm, the ADHD Portal is combined with the Care Manager. Clinicians, teachers, and parents will use the ADHD Portal. Clinicians, teachers, parents, and any external mental health providers will interact with a Care Manager, who will have access to information contained in the ADHD Portal.

Care Manager: The CM is responsible for communicating and coordinating ADHD care. The CM communicates with families weekly-every 3 months to assess treatment use and concerns, and problem-solve. The CM communicates with their ADHD care team (pediatrician, teacher, mental health provider) to clarify goals, communicate information, and coordinate treatment.

ADHD Portal: The ADHD portal is a web platform that permits access to parts of CHOP's electronic health record. The portal permits 1) capture, sharing of treatment preferences. 2) monitoring of ADHD symptoms, treatments, and side effects, and 3) assessing goal attainment.

Total of all reporting groups

It was expected that the gender distribution would reflect the gender distribution of children with ADHD in the CHOP Care Network: 72% male, 28% female. The row population differs from the overall by one as a participant did not complete further measures after consenting to the study and being randomized to the ADHD Portal Plus Care Manager Arm.

The row population differs from the overall by one as a participant did not complete further measures after consenting to the study and being randomized to the ADHD Portal Plus Care Manager Arm.

The VPRS measures ADHD symptoms and is scaled on a 4-point Likert rating ("never" to "very often"). The scale includes 18 ADHD symptom items with total scores ranges from 0-54. Row differs from overall because of missing data.

In this arm, the ADHD Portal will be used alone as an electronic communication tool.The ADHD portal is considered standard of care at our institution for communicating information between clinicians, teachers, and parents.

ADHD Portal: The ADHD portal is a web-based platform that permits access to parts of the hospital's electronic health record. The portal permits (1) capture and sharing of patient and family treatment preferences and goals, (2) monitoring of ADHD symptoms, treatment receipt, and side effects, and (3) assessing goal attainment. The system prompts for completion of periodic check-in surveys (bi-weekly to 3 months) with parents and teachers. Within the portal, preferences and goals for ADHD treatment are measured using the ADHD Preference Goal Instrument (PGI) (Fiks et al., 2012). Parents are encouraged to consult with their children when completing the tool.

In this arm, the ADHD Portal is combined with the Care Manager. Clinicians, teachers, and parents will use the ADHD Portal. Clinicians, teachers, parents, and any external mental health providers will interact with a Care Manager, who will have access to information contained in the ADHD Portal.

Care Manager: The CM is responsible for communicating and coordinating ADHD care. The CM communicates with families weekly-every 3 months to assess treatment use and concerns, and problem-solve. The CM communicates with their ADHD care team (pediatrician, teacher, mental health provider) to clarify goals, communicate information, and coordinate treatment.

ADHD Portal: The ADHD portal is a web platform that permits access to parts of CHOP's electronic health record. The portal permits 1) capture, sharing of treatment preferences. 2) monitoring of ADHD symptoms, treatments, and side effects, and 3) assessing goal attainment.

The GAS is a 5-point likert scale that assesses the degree to which parents' goals (obtained from the ADHD Preferences and Goals Instrument) are attained from none to completely. The GAS response categories are ordered from 0 ("no change") to 6 ("goal completely met"). Higher scores indicate greater goal attainment. The GAS was measured at baseline (Visit 1), 3 months (Visit 2), 6 months (Visit 3), and 9-12 months (Visit 4). The time range given for Visit 4 reflects the time range counted as a single value.

Using responses from the Services Assessment for Children and Adolescents (SACA), a well-validated client-reported tool and provides information on any mental health services use, ambulatory services use, and inpatient service use, we determined (yes/no) whether participants ever received educational services, mental health services, or medications for ADHD. Parents reported whether their children used services ever or within the last nine months. Treatment initiation was measured by use of services ever. Categorizations include any service use, ambulatory service use (any community mental health or outpatient clinic, private professional, or in-home provider), and overnight stay (psychiatric or medical unit, residential treatment center, group home, or foster home). The time range of 9-12 given for Visit 4 reflects the time range counted as a single value.

Numbers may not add to column totals due to missing data. Values and percentages for Ambulatory and Overnight services do not add up to the over n listed for the column due to missing data and logic structure of the Service Assessment for Children and Adolescents (SACA).

Using responses from the Services Assessment for Children and Adolescents (SACA), a well-validated client-reported tool and provides information on any mental health services use, ambulatory services use, and inpatient service use, we determined (yes/no) whether participants ever received educational services, mental health services, or medications for ADHD. Parents reported whether their children used services ever or within the last nine months. Treatment adherence was measured by use of services in the past nine months. Categorizations include any service use, ambulatory service use (any community mental health or outpatient clinic, private professional, or in-home provider), and overnight stay (psychiatric or medical unit, residential treatment center, group home, or foster home). The time range of 9-12 given for Visit 4 reflects the time range counted as a single value.

Rows may differ from overall umber analyzed due to missing data. Values and percentages for Ambulatory and Overnight services do not add up to the over n listed for the column due to missing data and logic structure of the Service Assessment for Children and Adolescents (SACA).

School Performance is a 5-item domain (minimum score=1, maximum score=5 on a 5 point Likert scale) of the of 30-item Child- (age 8-12) and 17-item Parent Patient Reported Outcomes Scores (PROS). The minimum total score for the School Performance domain is 5 and the maximum total score is 25 (total scores are not shown below). Values in the table below are reported as mean scores at each time point and therefore fall between the minimum score of 1 and maximum score of 5. Higher scores indicate better outcomes. Parent-reported PRO and child-reported PRO measures were averaged for each domain for each time point. School performance PRO scores were measured at baseline (Visit 1), 3 months (Visit 2), 6 months (Visit 3), and 9-12 months (Visit 4). The time range given for Visit 4 reflects the time range counted as a single value.

Row values may differ from overall values due to missing data and due to child measures being completed only by children 8-12 years old.

Student Engagement is a 4-item domain (minimum score=1, maximum score=5 on a 5 point Likert scale) of the of 30-item Child- (age 8-12) and 17-item Parent Patient Reported Outcomes Scores (PROS). The minimum total score for the Student Engagement domain is 4 and the maximum total score is 20 (total scores are not shown below). Values in the table below are reported as means at each time point and therefore fall between the minimum score of 1 and maximum score of 5. Higher scores indicate better outcomes. Parent-reported PRO and child-reported PRO measures were averaged for each domain for each time point. Student Engagement PRO scores were measured at baseline (Visit 1), 3 months (Visit 2), 6 months (Visit 3), and 9-12 months (Visit 4). The time range given for Visit 4 reflects the time range counted as a single value.

Row values may differ from overall values due to missing data and due to child measures being completed only by children 8-12 years old.

Teacher Connectedness is a 9-item domain (minimum=1, maximum=5 on a 5 point Likert scale) of the of 30-item Child- (age 8-12) and 17-item Parent Patient Reported Outcomes Scores (PROS). The minimum total score for the Teacher Connectedness domain is 9 and the maximum total score is 45 (total scores not shown below). Values in the table below are reported as means at each time point and therefore fall between the minimum score of 1 and maximum score of 5. Higher scores indicate better outcomes. Parent-reported PRO and child-reported PRO measures were averaged for each domain for each time point. Teacher Connectedness PRO scores were measured at baseline (Visit 1), 3 months (Visit 2), 6 months (Visit 3), and 9-12 months (Visit 4). The time range given for Visit 4 reflects the time range counted as a single value.

Row values may differ from overall number analyzed due to missing data.

Peer Relationships is a 6-item domain (minimum=1, maximum=5, on a 5 point Likert scale) of the of 30-item Child- (age 8-12) and a 7-item domain (minimum=1, maximum=5 on a 5 point Likert scale) of the 17-item Parent Patient Reported Outcomes Scores (PROS). The minimum total score is 6 and the maximum total score is 30 on the Child PROs. The minimum total score for the Peer Relationships domain is 7 and the maximum total score is 35 on the Parent PROs. Total scores not shown below. Values in the table below are reported as means at each time point and therefore fall between the minimum score of 1 and maximum score of 5. Parent-reported PRO and child-reported PRO measures were averaged for each domain for each time point. Higher scores indicate better outcomes. Peer Relationships PRO scores were measured at baseline (Visit 1), 3 months (Visit 2), 6 months (Visit 3), and 9-12 months (Visit 4). The time range given for Visit 4 reflects the time range counted as a single value.

Row values may differ from overall values due to missing data and due to child measures being completed only by children 8-12 years old.

Family Relationships is a 6-item domain (minimum=1, maximum=5 on a 5 point Likert scale) of the 30-item Child- (age 8-12) Patient Reported Outcomes Measures of relationships with other family members over the past 4 weeks. The minimum total score for the Family Relationships domain is 6 and the maximum total score is 30 (total scores not shown below). Values in the table below are reported as means at each time point and therefore fall between the minimum score of 1 and maximum score of 5. Child-reported PRO measures were averaged for each domain for each time point. Higher scores indicate better outcomes. Family Relationships PRO scores were measured at baseline (Visit 1), 3 months (Visit 2), 6 months (Visit 3), and 9-12 months (Visit 4). The time range given for Visit 4 reflects the time range counted as a single value.

Row values may differ from overall number for analysis due to missing data.

The Engagement Measure is a 28-item parent self-report measure comprised of four domains: Access (5-items, total score range 5-25), Patient Family Centered Care or PFCC (6-items, total score range 6-30), Communication (3-items, total score range 3-15), and Understanding (5-items, total score range 5-25). Total scores are not reported below. Scores for each individual item and therefore the mean for each domain (means reported in the table below) ranged from 1-5 with higher scores indicating greater engagement. The time range given for Visit 4 reflects the time range counted as a single value.

In this arm, the ADHD Portal is combined with the Care Manager. Clinicians, teachers, and parents will use the ADHD Portal. Clinicians, teachers, parents, and any external mental health providers will interact with a Care Manager, who will have access to information contained in the ADHD Portal.

Care Manager: The CM is responsible for communicating and coordinating ADHD care. The CM communicates with families weekly-every 3 months to assess treatment use and concerns, and problem-solve. The CM communicates with their ADHD care team (pediatrician, teacher, mental health provider) to clarify goals, communicate information, and coordinate treatment.

ADHD Portal: The ADHD portal is a web platform that permits access to parts of CHOP's electronic health record. The portal permits 1) capture, sharing of treatment preferences. 2) monitoring of ADHD symptoms, treatments, and side effects, and 3) assessing goal attainment.

Differences in proportions between the two groups in use of any inpatient mental health services were assessed using the Chi-square Test.

Differences in proportions between the two groups in use of inpatient mental health services during the study period were assessed using the Chi-square Test.

Random effects models regressed Child-reported PRO Peer Relationship Scores on intervention status, time (days), intervention by time, season, and clustered by doctor's office. we examined intervention X time interaction term for statistical significance.

Random effects models regressed Child Patient Reported Outcomes Peer Relationships Scores on intervention status, time (days), intervention by time, season, and clustered by doctor's office. The threshold for statistical significance was p<0.05.

Random effects models regressed Communication Engagement Scores Scores on intervention status adjusted for season and clustered by doctor's office.

Random effects models regressed Understanding Engagement Scores Scores on intervention status adjusted for season and clustered by doctor's office.