The Cohorts page manages study cohorts and patient groupings used in Sequoia.
A cohort represents the underlying participant dataset, biobank, clinical programme, or population resource from which one or more studies may be derived. For example, a cohort may represent a national biobank, an electronic-health-record resource, or a disease-focused research programme.
View available cohorts
The Cohorts table displays the cohort records available in the Data Dictionary.
[Screenshot 1: Use the full Cohorts page. Add a red box around the table.]
For each cohort, you can view:
- Abbreviation — A short cohort label used in the portal
- Name — The full cohort name
- Description — A summary of the cohort or participant resource
- Status
- Created date
- Number of associated studies, where displayed
Understand cohort status
A cohort marked Active is available for use in the portal and can be associated with relevant study records.
[Screenshot 2: Red box around an Active status label.]
Before changing a cohort’s status, review the studies linked to it and confirm that the change will not affect active workflows.
Search for a cohort
Use the search field to find a cohort by name, abbreviation, or supported identifier.
[Screenshot 3: Red box around the cohort search field and “Search” button.]
For example, search using terms such as BioMe, CKB, eMERGE, or Latvian.
Use advanced filters
Select Advanced Filters to narrow the cohort list using additional cohort properties.
[Screenshot 4: Red box around the “Advanced Filters” button.]
Filters can help you identify records by status, date created, cohort name, or other configured metadata.
Create a new cohort
Select New Cohort to add a cohort record.
[Screenshot 5: Red box and arrow pointing to the “New Cohort” button.]
Use a clear abbreviation and complete name. Add a concise description that explains:
- The participant population or data resource
- The type of data represented
- The cohort’s geographic, clinical, or research context
- Any relevant inclusion criteria or intended use
[Screenshot 6: Add a screenshot of the New Cohort form. Highlight the abbreviation, name, description, status, and save or create button.]
Sort and configure the table
Select a sort icon in a column heading to sort cohort records, for example by Abbreviation or Created date.
Select Columns to choose which metadata fields are displayed.
[Screenshot 7: Highlight the Abbreviation and Created sort icons, plus the “Columns” button.]
Tips
- Use a consistent abbreviation that is recognisable across study metadata and analysis outputs.
- Create one cohort record for each distinct participant resource or study population source.
- Avoid creating duplicate cohort records for the same biobank or programme.
- Keep descriptions sufficiently detailed for users to understand the origin of associated study data.
- Review the linked-study count before editing or inactivating an existing cohort.