J Am Med Inform Assoc - Developing a natural language processing application for measuring the quality of colonoscopy procedures.

Tópicos

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Resumo

JECTIVE: The quality of colonoscopy procedures for colorectal cancer screening is often inadequate and varies widely among physicians. Routine measurement of quality is limited by the costs of manual review of free-text patient charts. Our goal was to develop a natural language processing (NLP) application to measure colonoscopy quality.MATERIALS AND METHODS: Using a set of quality measures published by physician specialty societies, we implemented an NLP engine that extracts 21 variables for 19 quality measures from free-text colonoscopy and pathology reports. We evaluated the performance of the NLP engine on a test set of 453 colonoscopy reports and 226 pathology reports, considering accuracy in extracting the values of the target variables from text, and the reliability of the outcomes of the quality measures as computed from the NLP-extracted information.RESULTS: The average accuracy of the NLP engine over all variables was 0.89 (range: 0.62-1.0) and the average F measure over all variables was 0.74 (range: 0.49-0.89). The average agreement score, measured as Cohen's , between the manually established and NLP-derived outcomes of the quality measures was 0.62 (range: 0.09-0.86).DISCUSSION: For nine of the 19 colonoscopy quality measures, the agreement score was 0.70 or above, which we consider a sufficient score for the NLP-derived outcomes of these measures to be practically useful for quality measurement.CONCLUSION: The use of NLP for information extraction from free-text colonoscopy and pathology reports creates opportunities for large scale, routine quality measurement, which can support quality improvement in colonoscopy care.

Resumo Limpo

jectiv qualiti colonoscopi procedur colorect cancer screen often inadequ vari wide among physician routin measur qualiti limit cost manual review freetext patient chart goal develop natur languag process nlp applic measur colonoscopi qualitymateri method use set qualiti measur publish physician specialti societi implement nlp engin extract variabl qualiti measur freetext colonoscopi patholog report evalu perform nlp engin test set colonoscopi report patholog report consid accuraci extract valu target variabl text reliabl outcom qualiti measur comput nlpextract informationresult averag accuraci nlp engin variabl rang averag f measur variabl rang averag agreement score measur cohen manual establish nlpderiv outcom qualiti measur rang discuss nine colonoscopi qualiti measur agreement score consid suffici score nlpderiv outcom measur practic use qualiti measurementconclus use nlp inform extract freetext colonoscopi patholog report creat opportun larg scale routin qualiti measur can support qualiti improv colonoscopi care

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