Using the Data/Cohort Explorer

The primary purpose of the Data Explorer is to allow you to create cohorts using an easy-to-use Graphical User Interface that enables filtering data using a selection of criteria based on the most commonly used clinical concepts. 

It is also a great way to explore BRAINCommons data in order to gain a deeper insight on the breadth and depth of data across all Projects, regardless of whether you have access to them or not. 

To use the Data Explorer, you need to click on "Data" in the "Explore" Group on the left pane. 

When the page first loads, charts are populated with unfiltered data from all Projects within BRAINCommons.

You can then apply additional filters by using the drop-down selectors at the top of the page. 


All filters within each drop down are joined together with an "OR" operator whereas filters on different rows are joined with an "AND" operator. 

Although BRAINCommons only contains anonymized patient data, to further protect patient confidentiality and to ensure that it is not possible to derive a patient's identity by combining data, any charts containing a small number of cases from Projects that you are not entitled to are not shown and a message explaining that you are trying to view restricted data is shown instead. 

If you wish to store a cohort so that you can revisit it at a later stage without having to re-enter the filter, you can save it to your cohorts, which are are available under "My Stuff". 

To save your cohort, click on "Save Cohort. You will be asked to assign a friendly name so that you can easily identify it in your cohorts. 

If you have access to a WorkSpace, you can export a file manifest of the unstructured (object) files that correspond to your cohort by clicking on the "Export Manifest to WorkSpace" link within the "Unstructured Files" chart container. You can use the File Manifest with the BC-Client in order to retrieve and analyse object files within your WorkSpace.