ADHDPADHDPSNCT05231902
Prevalence of Attention Deficit/Hyperactivity Disorder and Parenting Stress in School-age Children in Chongqing, China
An observational study of ADHD, run by Chen Li at 1 site in China.
Trial summary
Attention deficit hyperactivity disorder (ADHD) is a common chronic neurodevelopmental disorder. Around 7.2% of children around the world are suffering from ADHD, while a chinese meta-analysis shows that the prevalence is 6.28%. Read more about this study
- Who is it for?
- Ages 6 to 12 yearsHealthy volunteers can take part
- Conditions the study is for
- ADHD
- How many people
- 6,480 participants
- Where
- 1 siteChina
- Study dates
- 1 Jun 2021to 30 Jun 2023
- Phase
- Observational
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 6 to 12 years
- All sexes
- Healthy volunteers accepted
- Child
Study population: school-age student in the selected primary school
Who may be able to join
- teacher: have been the teacher of the children more than one month; sign the informed consent
- parent: children in the selected primary school; sign the informed consent
Who cannot join
- parents: don't live with children
Trial locations and contacts
1 site in 1 country.
Chen, doctor contact
China1 site, 1 recruiting
- Recruiting
Growth, Development and Mental health of Children and Adolescence Center
Chongqing, Chongqing Municipality, 400014
Li Chen, doctor, 136 7762 0103 ext. +86, chenli2012@126.com
About this study
Attention deficit hyperactivity disorder (ADHD) is a common chronic neurodevelopmental disorder. Around 7.2% of children around the world are suffering from ADHD, while a chinese meta-analysis shows that the prevalence is 6.28%. There is no study of ADHD prevalence have used population-based samples, and depending on Vanderbilt ADHD Diagnostic Parent Rating Scale (VADPRS), in Chongqing, China. The purpose of the study is to investigate the prevalence of ADHD in school-age children and the parenting stress of parents of ADHD children in Chongqing. According to the proportion of primary school students in the four regions of Chongqing, using stratified proportional random sampling, 6480 primary school students are proposed to be selected as the research object, and questionnaires will complete by their caregivers and class teachers. VADPRS is used to evaluate the prevalence. Caregiver strain questionnaire (CGSQ) was used to assess parenting stress. Because of the nature of ADHD and the seriousness of its consequences, the periodic estimation of the prevalence of ADHD has been a critical research aim. This study can not only evaluate the prevalence of ADHD and parenting stress of parents of children with ADHD, but also use campus screening to promote parents and teachers' understanding of ADHD and improve the treatment rate.
Read the detailed description
Background: Attention deficit hyperactivity disorder (ADHD) is a common chronic neurodevelopmental disorder in children. The global prevalence of ADHD in children and adolescents is about 7.2%, while a domestic meta-analysis shows that its prevalence is about 6.3%. Foreign studies have shown that the parenting stress of parents of ADHD children is significantly higher than that of normal children. Vanderbilt scale is developed according to DSM-IV ADHD diagnostic criteria and revised with the latest DSM-V. It is applicable to school-age children, including Vanderbilt ADHD diagnostic parent rating scale (VADPRS) and Vanderbilt ADHD diagnostic teachers rating scale (VADTRS). The previous single center study of our research group has verified the reliability and validity of Vanderbilt scale. At present, a domestic multi-center research is being carried out, and the scale has been used in the diagnosis of ADHD in many countries. The caregiver strain questionnaire (CGSQ) is applicable to assess the pressure of parents of children under the age of 18 due to their children's problems. The 21 items of CGSQ are divided into three dimensions to assess parenting pressure, including objective pressure, subjective internal pressure and subjective external pressure. Likert grade 5 score is adopted, with a total score of 21 ~ 105, The higher the score, the greater the parenting pressure of caregivers. Relevant studies have confirmed that the questionnaire can be used to evaluate the parenting pressure of parents of ADHD children. The children's sleep habits questionnaire (CSHQ) is compiled on the basis of referring to the international classification of sleep problems/disorders. It is applicable to the ages of 4 ~ 12 years. The 35 items of CSHQ (33 of which enter the scoring system) have 8 levels, reflecting the common sleep problems/disorders of children, which are filled in by the guardian according to the typical sleep performance of children in recent half a year, The total score of CSHQ ≥ 41 indicates that it is a sleep problem/disorder. One research showed that the measurement performance of CSHQ in the evaluation of sleep status of school-age children in China is relatively stable.
Objective and significance: To understand the positive rate and difference of VADPRS and VADTRS among school-age children in Chongqing; To understand the parenting stress of children with VADPRS positive. At present, domestic pay less attention to the parenting pressure of ADHD children's parents, and these parents have not received social support. The significance of this study is to kown the prevalence of ADHD in Chongqing, improve parents' and teachers' understanding of ADHD, finally improve the treatment rate of ADHD, and hope to give rise to more attention to the parenting pressure of parents of ADHD children in China.
Research design: The sample size of primary school students in Chongqing is randomly divided into four regions according to the proportion of each region. The parents' questionnaire includes basic information, VADPRS, CSHQ and CGSQ, and the teachers' questionnaire includes basic information and VADTRS.
Sample size calculation: the minimum sample size calculation formula is adopted N=μα2×π×（1-π）/δ2 The sample confirmation: According to the existing literature at home and abroad, the prevalence of ADHD in children and adolescents (π≈ 7%) is the basis for determining the sample size and allowable error(δ) = 0.15 π, α =0.05, μα=1.96 Sample size required: N=1.962×0.07×（1-0.07）/（0.07×0.15）2=2268 Assuming that the response rate is 70%, the expanded sample size is 3240. Because the stratified cluster random sampling method is adopted in this study, the sample size is doubled and 6480 people should be investigated.
Statistical analysis: All the data are analyzed using SPSS 26.0; The statistics adopt two-sided test, and the test level is 0.05. Continuous variables that conform to the normal distribution are described by mean ± standard deviation, those don't conform to the normal distribution are described by median (first and third quartiles), and the number of use cases (percentage) of classified variables are described; Paired t-test or Wilcoxon signed rank sum test were used for the comparison of paired data
Ethical matters and data protection: The parents and teachers of school-age students participated in the study will sign the informed consent. And this study was approved by the local ethics committee. Every participated student has a only code then the research data will be provided to the researcher. The authorization from parents on the patient's health information remains valid until the study is completed. After that, researchers will delete private information from the study record.
- Conditions
- ADHD
- Keywords
- ADHD, parenting stress
- Medical subject headings
- Attention Deficit Disorder with Hyperactivity
What is being measured
The primary outcome is the main question the study is designed to answer.
The positive rate of Vanderbilt ADHD Diagnostic Parent Rating Scale among school-age children in Chongqing
Vanderbilt ADHD diagnostic parent rating scale (VADPRS) includes two parts: behavior and performance. Behavior part: attention deficit (items 1 ~ 9), hyperactivity / impulse (items 10 ~ 18), are scored according to four levels of 0 ~ 3; The performance part includes 8 items, 4 items are used to evaluate the children's academic performance and 4 items are used to evaluate the children's interpersonal relationship, with a five grade score of 1 ~ 5 Attention deficit: from item 1 to 9, at least 6 items ≥ 2 score Hyperactivity impulse: from item 10 to 18, at least 6 items ≥ 2 score Functional impairment: at least 2 items ≥ 4 score or at least 1 item≥ 5 score Positive: meet attention deficit + functional impairment or hyperactivity impulse + functional impairment or attention deficit + hyperactivity/impulse+functional impairment
Measured: 6 months
Parenting stress of parents of children with positive Vanderbilt ADHD Diagnostic Parent Rating Scale
The total score of 21 items in caregiver stress questionnaire (CGSQ) questionnaire is from 21 to 105, the higher total score, the greater the pressure. Compare the CGSQ score between VADPRS (+) and VADPRS (-).
Measured: 6 months
Secondary outcomes (3)
The positive rate of Vanderbilt ADHD diagnostic teacher rating scale for school-age children in Chongqing
Vanderbilt ADHD diagnostic teacher rating scale (VADTRS) includes two parts: behavior and performance. Behavior part: attention deficit (items 1 ~ 9), hyperactivity / impulse (items 10 ~ 18), are scored according to four levels of 0 ~ 3; The performance part includes 8 items, 4 items are used to evaluate the children's academic performance and 4 items are used to evaluate the children's interpersonal relationship, with a five grade score of 1 ~ 5 Attention deficit: from item 1 to 9, at least 6 items ≥ 2 score Hyperactivity impulse: from item 10 to 18, at least 6 items ≥ 2 score Functional impairment: at least 2 items ≥ 4 score or at least 1 item≥ 5 score Positive: meet attention deficit + functional impairment or hyperactivity impulse + functional impairment or attention deficit + hyperactivity/impulse+functional impairment
Measured: 6 months
Sleep status of children with Vanderbilt ADHD diagnostic parent rating scale positive screening
The total score is the sum of the scores of 33 items of child sleep habit questionnaire (CSHQ). If the total score is ≥ 41, it is positive. VADPRS (+) and VADPRS (-) compare the positive situation of CSHQ
Measured: 6 months
Parenting stress of children with both positive Vanderbilt ADHD diagnostic parent rating scale and positive child sleep habit questionnaire
In Vanderbilt ADHD diagnostic parent rating scale (VADPRS) (+), compare caregiver stress questionnaire(CGSQ) score between child sleep habit questionnaire (CSHQ) (+) and child sleep habit questionnaire (CSHQ) (-). The higher score, the greater stress.
Measured: 6 months
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted9 Feb 2022
- Study start1 Jun 2021
- Primary completion30 Jun 2022 (estimated)
- Study completion30 Jun 2023 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (6)Papers the sponsor has linked to this study.
- Other trials for ADHDStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Observational model
- Ecologic or community
- Time perspective
- Cross-sectional
- Enrolment
- 6,480 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Chen Li
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor-investigator, Chen Li, Children's Hospital of Chongqing Medical University
- Investigators
- Li Chen, doctor, Study director, Children's Hospital of Chongqing Medical University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT05231902
- Sponsor's protocol ID
- CHENl
- Acronym
- PADHDPS
- Status last verified
- Feb 2022
- First submitted
- 30 Jan 2022
- Last updated
- 3 Mar 2022
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No: Data is confidential during the study
Publications
Wolraich ML, Hagan JF Jr, Allan C, Chan E, Davison D, Earls M, Evans SW, Flinn SK, Froehlich T, Frost J, Holbrook JR, Lehmann CU, Lessin HR, Okechukwu K, Pierce KL, Winner JD, Zurhellen W; SUBCOMMITTEE ON CHILDREN AND ADOLESCENTS WITH ATTENTION-DEFICIT/HYPERACTIVE DISORDER. Clinical Practice Guideline for the Diagnosis, Evaluation, and Treatment of Attention-Deficit/Hyperactivity Disorder in Children and Adolescents. Pediatrics. 2019 Oct;144(4):e20192528. doi: 10.1542/peds.2019-2528.
PubMed 31570648Liu A, Xu Y, Yan Q, Tong L. The Prevalence of Attention Deficit/Hyperactivity Disorder among Chinese Children and Adolescents. Sci Rep. 2018 Aug 16;8(1):11169. doi: 10.1038/s41598-018-29488-2.
PubMed 30115972Leitch S, Sciberras E, Post B, Gerner B, Rinehart N, Nicholson JM, Evans S. Experience of stress in parents of children with ADHD: A qualitative study. Int J Qual Stud Health Well-being. 2019 Dec;14(1):1690091. doi: 10.1080/17482631.2019.1690091.
PubMed 31713473Bussing R, Gary FA, Mason DM, Leon CE, Sinha K, Garvan CW. Child temperament, ADHD, and caregiver strain: exploring relationships in an epidemiological sample. J Am Acad Child Adolesc Psychiatry. 2003 Feb;42(2):184-92. doi: 10.1097/00004583-200302000-00012.
PubMed 12544178Owens JA, Spirito A, McGuinn M. The Children's Sleep Habits Questionnaire (CSHQ): psychometric properties of a survey instrument for school-aged children. Sleep. 2000 Dec 15;23(8):1043-51.
PubMed 11145319Tan J, Yi W, Shen J, Peng B, Gong M, Li F, Chen L. Impact of online health education on attention-deficit/hyperactivity disorder screening results and parenting stress among school-aged children. Front Psychiatry. 2025 Jan 31;16:1522263. doi: 10.3389/fpsyt.2025.1522263. eCollection 2025.
PubMed 39958151
Study at a glance
From the registry record, last updated by the sponsor on 3 Mar 2022. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Prevalence of Attention Deficit/Hyperactivity Disorder and Parenting Stress in School-age Children in Chongqing, China
- ClinicalTrials.gov ID
- NCT05231902
- Acronym / sponsor ID
- PADHDPS / CHENl
- Conditions
- ADHD
- Keywords
- ADHD, parenting stress
- Study type
- Observational
- Recruitment status
- Unknown status
- Enrolment
- 6,480 participants (estimated)
- Lead sponsor
- Chen LiUniversity, hospital or other
- Study start
- 1 Jun 2021 (actual)
- Primary completion
- 30 Jun 2022 (estimated)
- Study completion
- 30 Jun 2023 (estimated)
- First posted
- 9 Feb 2022 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Attention deficit hyperactivity disorder (ADHD) is a common chronic neurodevelopmental disorder. Around 7.2% of children around the world are suffering from ADHD, while a chinese meta-analysis shows that the prevalence is 6.28%. There is no study of ADHD prevalence have used population-based samples, and depending on Vanderbilt ADHD Diagnostic Parent Rating Scale (VADPRS), in Chongqing, China. The purpose of the study is to investigate the prevalence of ADHD in school-age children and the parenting stress of parents of ADHD children in Chongqing. According to the proportion of primary school students in the four regions of Chongqing, using stratified proportional random sampling, 6480 primary school students are proposed to be selected as the research object, and questionnaires will complete by their caregivers and class teachers. VADPRS is used to evaluate the prevalence. Caregiver strain questionnaire (CGSQ) was used to assess parenting stress. Because of the nature of ADHD and the seriousness of its consequences, the periodic estimation of the prevalence of ADHD has been a critical research aim. This study can not only evaluate the prevalence of ADHD and parenting stress of parents of children with ADHD, but also use campus screening to promote parents and teachers' understanding of ADHD and improve the treatment rate.
Detailed description
Background: Attention deficit hyperactivity disorder (ADHD) is a common chronic neurodevelopmental disorder in children. The global prevalence of ADHD in children and adolescents is about 7.2%, while a domestic meta-analysis shows that its prevalence is about 6.3%. Foreign studies have shown that the parenting stress of parents of ADHD children is significantly higher than that of normal children. Vanderbilt scale is developed according to DSM-IV ADHD diagnostic criteria and revised with the latest DSM-V. It is applicable to school-age children, including Vanderbilt ADHD diagnostic parent rating scale (VADPRS) and Vanderbilt ADHD diagnostic teachers rating scale (VADTRS). The previous single center study of our research group has verified the reliability and validity of Vanderbilt scale. At present, a domestic multi-center research is being carried out, and the scale has been used in the diagnosis of ADHD in many countries. The caregiver strain questionnaire (CGSQ) is applicable to assess the pressure of parents of children under the age of 18 due to their children's problems. The 21 items of CGSQ are divided into three dimensions to assess parenting pressure, including objective pressure, subjective internal pressure and subjective external pressure. Likert grade 5 score is adopted, with a total score of 21 ~ 105, The higher the score, the greater the parenting pressure of caregivers. Relevant studies have confirmed that the questionnaire can be used to evaluate the parenting pressure of parents of ADHD children. The children's sleep habits questionnaire (CSHQ) is compiled on the basis of referring to the international classification of sleep problems/disorders. It is applicable to the ages of 4 ~ 12 years. The 35 items of CSHQ (33 of which enter the scoring system) have 8 levels, reflecting the common sleep problems/disorders of children, which are filled in by the guardian according to the typical sleep performance of children in recent half a year, The total score of CSHQ ≥ 41 indicates that it is a sleep problem/disorder. One research showed that the measurement performance of CSHQ in the evaluation of sleep status of school-age children in China is relatively stable.
Objective and significance: To understand the positive rate and difference of VADPRS and VADTRS among school-age children in Chongqing; To understand the parenting stress of children with VADPRS positive. At present, domestic pay less attention to the parenting pressure of ADHD children's parents, and these parents have not received social support. The significance of this study is to kown the prevalence of ADHD in Chongqing, improve parents' and teachers' understanding of ADHD, finally improve the treatment rate of ADHD, and hope to give rise to more attention to the parenting pressure of parents of ADHD children in China.
Research design: The sample size of primary school students in Chongqing is randomly divided into four regions according to the proportion of each region. The parents' questionnaire includes basic information, VADPRS, CSHQ and CGSQ, and the teachers' questionnaire includes basic information and VADTRS.
Sample size calculation: the minimum sample size calculation formula is adopted N=μα2×π×（1-π）/δ2 The sample confirmation: According to the existing literature at home and abroad, the prevalence of ADHD in children and adolescents (π≈ 7%) is the basis for determining the sample size and allowable error(δ) = 0.15 π, α =0.05, μα=1.96 Sample size required: N=1.962×0.07×（1-0.07）/（0.07×0.15）2=2268 Assuming that the response rate is 70%, the expanded sample size is 3240. Because the stratified cluster random sampling method is adopted in this study, the sample size is doubled and 6480 people should be investigated.
Statistical analysis: All the data are analyzed using SPSS 26.0; The statistics adopt two-sided test, and the test level is 0.05. Continuous variables that conform to the normal distribution are described by mean ± standard deviation, those don't conform to the normal distribution are described by median (first and third quartiles), and the number of use cases (percentage) of classified variables are described; Paired t-test or Wilcoxon signed rank sum test were used for the comparison of paired data
Ethical matters and data protection: The parents and teachers of school-age students participated in the study will sign the informed consent. And this study was approved by the local ethics committee. Every participated student has a only code then the research data will be provided to the researcher. The authorization from parents on the patient's health information remains valid until the study is completed. After that, researchers will delete private information from the study record.
Study design
- Observational model
- Ecologic or community
- Time perspective
- Cross-sectional
Who may qualify
- Ages
- 6 to 12 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Child
- Study population
- school-age student in the selected primary school
Key inclusion criteria (2 listed)
- teacher: have been the teacher of the children more than one month; sign the informed consent
- parent: children in the selected primary school; sign the informed consent
Key exclusion criteria (1 listed)
- parents: don't live with children
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Primary outcome
The positive rate of Vanderbilt ADHD Diagnostic Parent Rating Scale among school-age children in Chongqing
Time frame: 6 months
Vanderbilt ADHD diagnostic parent rating scale (VADPRS) includes two parts: behavior and performance. Behavior part: attention deficit (items 1 ~ 9), hyperactivity / impulse (items 10 ~ 18), are scored according to four levels of 0 ~ 3; The performance part includes 8 items, 4 items are used to evaluate the children's academic performance and 4 items are used to evaluate the children's interpersonal relationship, with a five grade score of 1 ~ 5 Attention deficit: from item 1 to 9, at least 6 items ≥ 2 score Hyperactivity impulse: from item 10 to 18, at least 6 items ≥ 2 score Functional impairment: at least 2 items ≥ 4 score or at least 1 item≥ 5 score Positive: meet attention deficit + functional impairment or hyperactivity impulse + functional impairment or attention deficit + hyperactivity/impulse+functional impairment
Parenting stress of parents of children with positive Vanderbilt ADHD Diagnostic Parent Rating Scale
Time frame: 6 months
The total score of 21 items in caregiver stress questionnaire (CGSQ) questionnaire is from 21 to 105, the higher total score, the greater the pressure. Compare the CGSQ score between VADPRS (+) and VADPRS (-).
3 secondary outcomes
The positive rate of Vanderbilt ADHD diagnostic teacher rating scale for school-age children in Chongqing
Time frame: 6 months
Sleep status of children with Vanderbilt ADHD diagnostic parent rating scale positive screening
Time frame: 6 months
Parenting stress of children with both positive Vanderbilt ADHD diagnostic parent rating scale and positive child sleep habit questionnaire
Time frame: 6 months
Results and safety
Results are not available in the source record.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 3 Mar 2022.
- Background: PubMed 31570648Wolraich ML, Hagan JF Jr, Allan C, Chan E, Davison D, Earls M, Evans SW, Flinn SK, Froehlich T, Frost J, Holbrook JR, Lehmann CU, Lessin HR, Okechukwu K, Pierce KL, Winner JD, Zurhellen W; SUBCOMMITTEE ON CHILDREN AND ADOLESCENTS WITH ATTENTION-DEFICIT/HYPERACTIVE DISORDER. Clinical Practice Guideline for the Diagnosis, Evaluation, and Treatment of Attention-Deficit/Hyperactivity Disorder in Children and Adolescents. Pediatrics. 2019 Oct;144(4):e20192528. doi: 10.1542/peds.2019-2528.
- Background: PubMed 30115972Liu A, Xu Y, Yan Q, Tong L. The Prevalence of Attention Deficit/Hyperactivity Disorder among Chinese Children and Adolescents. Sci Rep. 2018 Aug 16;8(1):11169. doi: 10.1038/s41598-018-29488-2.
- Background: PubMed 31713473Leitch S, Sciberras E, Post B, Gerner B, Rinehart N, Nicholson JM, Evans S. Experience of stress in parents of children with ADHD: A qualitative study. Int J Qual Stud Health Well-being. 2019 Dec;14(1):1690091. doi: 10.1080/17482631.2019.1690091.
- Background: PubMed 12544178Bussing R, Gary FA, Mason DM, Leon CE, Sinha K, Garvan CW. Child temperament, ADHD, and caregiver strain: exploring relationships in an epidemiological sample. J Am Acad Child Adolesc Psychiatry. 2003 Feb;42(2):184-92. doi: 10.1097/00004583-200302000-00012.
- Background: PubMed 11145319Owens JA, Spirito A, McGuinn M. The Children's Sleep Habits Questionnaire (CSHQ): psychometric properties of a survey instrument for school-aged children. Sleep. 2000 Dec 15;23(8):1043-51.
- Derived from this study: PubMed 39958151Tan J, Yi W, Shen J, Peng B, Gong M, Li F, Chen L. Impact of online health education on attention-deficit/hyperactivity disorder screening results and parenting stress among school-aged children. Front Psychiatry. 2025 Jan 31;16:1522263. doi: 10.3389/fpsyt.2025.1522263. eCollection 2025.
- Individual participant dataSharing planned: No. Data is confidential during the study
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Chen, doctor contact
Li Chen, doctor study director
Children's Hospital of Chongqing Medical University
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of ADHD, run by Chen Li at 1 site in China.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 2 inclusion and 1 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: status not confirmed, as of the sponsor's last update on 3 Mar 2022. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in China. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
Results are not available in the source record.
How can a doctor refer a patient or contact the research team?
Contact Li Chen, doctor (136 7762 0103 ext. +86, chenli2012@126.com), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
The positive rate of Vanderbilt ADHD Diagnostic Parent Rating Scale among school-age children in Chongqing (time frame: 6 months). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT05231902, which also lists 6 linked publications.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 3 Mar 2022.