i2b2 Cohort Discovery Tool
The i2b2 Cohort Discovery Tool provides an easy to use, self-service method for MCW researchers to query the i2b2 Clinical & Translational Research Informatics Data Warehouse (CTRI-CRDW) to answer the question “Does the i2b2 CTRI-CRDW contain a cohort of patients with these characteristics?”. Search criteria can include patient demographics, ICD coded diagnoses, ICD and CPT coded procedures, laboratory test results, inpatient pharmacy orders and text within clinical documents, including surgical pathology reports and radiology reports.
In response to a query, the Cohort Discovery Tool returns the approximate number of patients matching the search criteria. No patient identifiers or clinical data is revealed. Researchers can store their cohort searches online and later meet with staff from the Medical College of Wisconsin Clinical & Translational Research Informatics team to discuss how they might review and extract detailed clinical data on patient cohorts for research purposes. Release of data from the i2b2 CTRI-CRDW for research purposes requires Medical College of Wisconsin IRB approval.
Hypotheses and Feasibility
EMR systems are primarily designed for patient management and billing. Using this data for research purposes can be challenging. We strongly encourage researchers to meet with us in the early stages of a project to gauge the feasibility of clinical queries and to help identify any nuances in the clinical data that could affect their interpretation of the data.
Examples of Clinical Data Types Available
0
2015 Fact Count
Patients
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FMLH
0
CHW
Patient Encounters
0
FMLH
0
CHW
Diagnosis ICD9
0
FMLH
0
CHW
Allergies
0
FMLH
0
CHW
Family History
0
FMLH
0
CHW
Immunizations
0
FMLH
0
CHW
Medications
0
FMLH
0
CHW
Order Results
0
FMLH
0
CHW
Lifestyle *
0
FMLH
0
CHW
Unstructured Notes
0
FMLH
0
CHW
Procedures
0
FMLH
0
CHW
Flowsheets
0
FMLH
0
CHW
* Lifestyle (tobacco, alcohol, drugs, and contraceptives)
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