Development of a natural language processing system to identify timing and status of colonoscopy testing in electronic medical records

Colorectal cancer (CRC) screening rates are low despite proven benefits. We developed natural language processing (NLP) algorithms to identify temporal expressions and status indicators, such as "patient refused" or "test scheduled." The authors incorporated the algorithms into t...

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Published in:AMIA ... Annual Symposium proceedings 2009-11, Vol.2009, p.141-141
Main Authors: Denny, Joshua C, Peterson, Josh F, Choma, Neesha N, Xu, Hua, Miller, Randolph A, Bastarache, Lisa, Peterson, Neeraja B
Format: Article
Language:English
Subjects:
Algorithms
Colonoscopy
Colorectal Neoplasms - diagnosis
Early Detection of Cancer
Electronic Health Records
Humans
Natural Language Processing
Time Factors
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container_title AMIA ... Annual Symposium proceedings
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creator Denny, Joshua C
Peterson, Josh F
Choma, Neesha N
Xu, Hua
Miller, Randolph A
Bastarache, Lisa
Peterson, Neeraja B
description Colorectal cancer (CRC) screening rates are low despite proven benefits. We developed natural language processing (NLP) algorithms to identify temporal expressions and status indicators, such as "patient refused" or "test scheduled." The authors incorporated the algorithms into the KnowledgeMap Concept Identifier system in order to detect references to completed colonoscopies within electronic text. The modified NLP system was evaluated using 200 randomly selected electronic medical records (EMRs) from a primary care population aged >/=50 years. The system detected completed colonoscopies with recall and precision of 0.93 and 0.92. The system was superior to a query of colonoscopy billing codes to determine screening status.
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subjects Algorithms
Colonoscopy
Colorectal Neoplasms - diagnosis
Early Detection of Cancer
Electronic Health Records
Humans
Natural Language Processing
Time Factors
title Development of a natural language processing system to identify timing and status of colonoscopy testing in electronic medical records
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