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Characterization of patients with advanced chronic pancreatitis using natural language processing of radiology reports

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Listed:
  • Fagen Xie
  • Qiaoling Chen
  • Yichen Zhou
  • Wansu Chen
  • Jemianne Bautista
  • Emilie T Nguyen
  • Rex A Parker
  • Bechien U Wu

Abstract

Study aim: To develop and apply a natural language processing algorithm for characterization of patients diagnosed with chronic pancreatitis in a diverse integrated U.S. healthcare system. Methods: Retrospective cohort study including patients initially diagnosed with chronic pancreatitis (CP) within a regional integrated healthcare system between January 1, 2006 and December 31, 2015. Imaging reports from these patients were extracted from the electronic medical record system and split into training, validation and implementation datasets. A natural language processing (NLP) algorithm was first developed through the training dataset to identify specific features (atrophy, calcification, pseudocyst, cyst and main duct dilatation) from free-text radiology reports. The validation dataset was applied to validate the performance by comparing against the manual chart review. The developed algorithm was then applied to the implementation dataset. We classified patients with calcification(s) or ≥2 radiographic features as advanced CP. We compared etiology, comorbid conditions, treatment parameters as well as survival between advanced CP and others diagnosed during the study period. Results: 6,346 patients were diagnosed with CP during the study period with 58,085 radiology studies performed. For individual features, NLP yielded sensitivity from 88.7% to 95.3%, specificity from 98.2% to 100.0%. A total of 3,672 patients met cohort inclusion criteria: 1,330 (36.2%) had evidence of advanced CP. Patients with advanced CP had increased frequency of smoking (57.8% vs. 43.0%), diabetes (47.6% vs. 35.9%) and underweight body mass index (6.6% vs. 3.6%), all p

Suggested Citation

  • Fagen Xie & Qiaoling Chen & Yichen Zhou & Wansu Chen & Jemianne Bautista & Emilie T Nguyen & Rex A Parker & Bechien U Wu, 2020. "Characterization of patients with advanced chronic pancreatitis using natural language processing of radiology reports," PLOS ONE, Public Library of Science, vol. 15(8), pages 1-13, August.
    • Handle: RePEc:plo:pone00:0236817
    DOI: 10.1371/journal.pone.0236817
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    1. Paul T E Cusack, 2020. "On Pain," Biomedical Journal of Scientific & Technical Research, Biomedical Research Network+, LLC, vol. 31(3), pages 24253-24254, October.
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