Obsessive-compulsive DisorderNCT04723485
Evaluation Study: Obsessive-compulsive Disorders in Childhood and Young Adulthood
An observational study of Obsessive-compulsive Disorder, run by Susanne Walitza at 1 site in Switzerland.
Trial summary
Obsessive-compulsive disorders are very damaging illnesses that can already manifest in childhood and adolescence. With an average prevalence from 1 - 3%, they are one of the most frequently diagnosed psychiatric illness in these age groups. Read more about this study
- Who is it for?
- Ages 4 to 18 years
- Conditions the study is for
- Obsessive-compulsive Disorder
- How many people
- 625 participants
- Where
- 1 siteSwitzerland
- Study dates
- 1 May 2020to 1 Mar 2026
- Phase
- Observational
- Are there results?
- Not yet: the study is under way
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 4 to 18 years
- All sexes
- No healthy volunteers
- Child, Adult
Study population: The sample consist of pupils with obsessive-compulsive disorder 4 to 18 years
Who may be able to join
- Children and young people from 8-18 years of age who fulfill the international classification of diseases tenth edition (ICD-10) , obsessive-compulsive disorder handled in our clinic.
- Good German language speaking skills
- IQ > 75
- All study participants or their legal representative have given written permission for their experiences to be documented in the study.
Who cannot join
- Schizophrenia-related disorders (psychoses)
- Missing data
- Data sets without confirmed diagnosis
- Purely consultaive patient interview (no therapy intervention prescribed)
Trial locations and contacts
1 site in 1 country. Contact the study team or a site near you to ask about taking part.
Switzerland1 site, 1 recruiting
- Recruiting
Psychiatric University Clinics, Department of Child and Adolescent Psychiatry
Zurich, Canton of Zurich, 8032
Susanne Walitza, Prof. Dr. med. Dipl.-Psych., +41 43 499 26 26, susanne.walitza@puk.zh.ch
Siebke Melfsen, Dr., +49 45 42 98 69 77 4, siebke.melfsen@online.de
About this study
Obsessive-compulsive disorders are very damaging illnesses that can already manifest in childhood and adolescence. With an average prevalence from 1 - 3%, they are one of the most frequently diagnosed psychiatric illness in these age groups. With the further use of data, the treatment success can be significantly improved; causal variables/predictors can be recognized, understood and taken carefully into account. The anticipated incremental knowledge will ultimately help children and young people with obsessive-compulsive disorders to receive faster and more effective treatment.
- Conditions
- Obsessive-compulsive Disorder
- Medical subject headings
- Obsessive-Compulsive Disorder
What is being measured
The primary outcome is the main question the study is designed to answer.
Symptoms severity of obsessive and compulsive symptoms in children and adolescents
The clinician report questionnaire (BY-BOCS) contains 19 items designed to assess severity of obsessive and compulsive symptoms in children and adolescents.The test uses a four point scale to rate the severity of their obsessive compulsive behaviors. Higher score means a worse outcome.
Measured: 24 months
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted25 Jan 2021
- Study start1 May 2020
- Primary completion1 Mar 2026 (estimated)
- Study completion1 Mar 2026 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Obsessive-compulsive DisorderStudies 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
- Cohort
- Time perspective
- Retrospective
- Enrolment
- 625 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Susanne Walitza
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor-investigator, Susanne Walitza, Psychiatric University Hospital, Zurich
- Investigators
- Susanne Walitza, Prof. Dr. med. Dipl.-Psych., Principal investigator, Sponsor-Investigator
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT04723485
- Sponsor's protocol ID
- KJPP 2019-00230
- Status last verified
- May 2025
- First submitted
- 21 Jan 2021
- Last updated
- 13 May 2025
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- Undecided
Study at a glance
From the registry record, last updated by the sponsor on 13 May 2025. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Evaluation Study: Obsessive-compulsive Disorders in Childhood and Young Adulthood
- ClinicalTrials.gov ID
- NCT04723485
- Acronym / sponsor ID
- KJPP 2019-00230
- Conditions
- Obsessive-compulsive Disorder
- Study type
- Observational
- Recruitment status
- Recruiting
- Enrolment
- 625 participants (estimated)
- Lead sponsor
- Susanne WalitzaUniversity, hospital or other
- Study start
- 1 May 2020 (actual)
- Primary completion
- 1 Mar 2026 (estimated)
- Study completion
- 1 Mar 2026 (estimated)
- First posted
- 25 Jan 2021 (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.
Obsessive-compulsive disorders are very damaging illnesses that can already manifest in childhood and adolescence. With an average prevalence from 1 - 3%, they are one of the most frequently diagnosed psychiatric illness in these age groups. With the further use of data, the treatment success can be significantly improved; causal variables/predictors can be recognized, understood and taken carefully into account. The anticipated incremental knowledge will ultimately help children and young people with obsessive-compulsive disorders to receive faster and more effective treatment.
Study design
- Observational model
- Cohort
- Time perspective
- Retrospective
Who may qualify
- Ages
- 4 to 18 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Child, Adult
- Study population
- The sample consist of pupils with obsessive-compulsive disorder 4 to 18 years
Key inclusion criteria (4 listed)
- Children and young people from 8-18 years of age who fulfill the international classification of diseases tenth edition (ICD-10) , obsessive-compulsive disorder handled in our clinic.
- Good German language speaking skills
- IQ > 75
- All study participants or their legal representative have given written permission for their experiences to be documented in the study.
Key exclusion criteria (4 listed)
- Schizophrenia-related disorders (psychoses)
- Missing data
- Data sets without confirmed diagnosis
- Purely consultaive patient interview (no therapy intervention prescribed)
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
Symptoms severity of obsessive and compulsive symptoms in children and adolescents
Time frame: 24 months
The clinician report questionnaire (BY-BOCS) contains 19 items designed to assess severity of obsessive and compulsive symptoms in children and adolescents.The test uses a four point scale to rate the severity of their obsessive compulsive behaviors. Higher score means a worse outcome.
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 13 May 2025.
- Individual participant dataSharing planned: Undecided
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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.
Susanne Walitza, Prof. Dr. med. Dipl.-Psych. principal investigator
Sponsor-Investigator
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 Obsessive-compulsive Disorder, run by Susanne Walitza at 1 site in Switzerland.
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 4 inclusion and 4 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: looking for participants now, as of the sponsor's last update on 13 May 2025. 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 Switzerland. 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?
This study is still under way. Results are not available in the source record yet.
How can a doctor refer a patient or contact the research team?
Contact Susanne Walitza, Prof. Dr. med. Dipl.-Psych. (+41 (0)43 499 26 26, susanne.walitza@puk.zh.ch), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Symptoms severity of obsessive and compulsive symptoms in children and adolescents (time frame: 24 months). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
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 13 May 2025.