Identifying risk factors for heart disease over time: Overview of 2014 i2b2/UTHealth shared task Track 2.
Journal:
Journal of biomedical informatics
Published Date:
Dec 1, 2015
Abstract
The second track of the 2014 i2b2/UTHealth natural language processing shared task focused on identifying medical risk factors related to Coronary Artery Disease (CAD) in the narratives of longitudinal medical records of diabetic patients. The risk factors included hypertension, hyperlipidemia, obesity, smoking status, and family history, as well as diabetes and CAD, and indicators that suggest the presence of those diseases. In addition to identifying the risk factors, this track of the 2014 i2b2/UTHealth shared task studied the presence and progression of the risk factors in longitudinal medical records. Twenty teams participated in this track, and submitted 49 system runs for evaluation. Six of the top 10 teams achieved F1 scores over 0.90, and all 10 scored over 0.87. The most successful system used a combination of additional annotations, external lexicons, hand-written rules and Support Vector Machines. The results of this track indicate that identification of risk factors and their progression over time is well within the reach of automated systems.
Authors
Keywords
Aged
Boston
Cohort Studies
Comorbidity
Computer Security
Confidentiality
Coronary Artery Disease
Data Mining
Diabetes Complications
Electronic Health Records
Female
Humans
Incidence
Longitudinal Studies
Male
Middle Aged
Narration
Natural Language Processing
Pattern Recognition, Automated
Risk Assessment
Vocabulary, Controlled