Cohort Discovery

The Cohort Discovery is a web-based tool that allows OHSU researchers to discover patient cohort counts from Epic data for preparatory to research purposes.  This information contained in Cohort Discovery is de-identified but patient data sets can be extracted from saved searches with proper IRB approval.



  • Assess the feasibility of research studies
  • Identify patients meeting inclusion/exclusion criteria 
  • Pre-IRB study planning


  • Demographics
  • Diagnoses
  • Medications
  • Procedures
  • Laboratory Results including Microbiology
  • Surgeries
  • Patient Visits
  • Vital Signs


To utilize this tool researchers must participate one time in a two hour training prior to gaining access.  Tutorials are offered once a month in the BICC 120 Training Room.  To register please refer to the User Requirements section.

  • Wednesday, October 26, 2016 from 10:00 am to 12:00 pm
  • Monday, November 21, 2016 from 1:00 pm to 3:00 pm
  • Friday, December 16, 2016 from 10:00 am to 12:00 pm
  • Wednesday, January 18, 2017 from 10:00 am to 12:00 pm
  • Friday, February 24, 2017 from 10:00 am to 12:00 pm
  • Monday, March 20, 2017 from 1:00 pm to 3:00 pm
  • Thursday, April 20, 2017 from 12:00 pm to 2:00 pm
  • Tuesday, May 16, 2017 from 1:30 pm to 3:30 pm (*This tutorial held in BICC 121 Training Room)
  • Friday, June 16, 2017 from 1:00 pm to 3:00 pm

Additionally, OCTRI holds weekly Cohort Discovery Drop-In/Demo Help Sessions every Wednesday from 1:00 pm - 2:00 pm in School of Nursing, Conference Room 425. Please stop by to learn more about Cohort Discovery and how to utilize it in your research!


To register for a tutorial, send an email to OCTRI Informatics Research Support.  Pre-registration at least 1 business day in advance is required to attend a Cohort Discovery training.

  • Prior to registration attendees must have a current OHSU network log-in with an OHSU user ID and password and an OHSU employee ID number. 
  • There are 3 pre-requisite (required) trainings in Compass that an individual must complete prior to attending the tutorial.   The trainings that need to be completed and have a current status as "Completed" are :
    • HIPAA - Privacy and You
    • Responsible Conduct of Research (RCR)
    • Human Subjects Research (HSR): Human Researchers
  • Upon arrival at training, individuals will need to sign the Cohort Discovery Access Agreement.


Question mark

If you've already attended a Tutorial Session and you need help please send an email to the Informatics Research Support Team.

Cohort Discovery utilizes open-source software funded by an NIH cooperative agreement with Partners HealthCare System through the National Center for Biomedical Computing (NCBC) program called i2b2 (Informatics for Integrating Biology and the Bedside). 

Related Services