Evidence map›Paper›PMID 31282932›Full record

ArticleJournal of the American Medical Informatics Association : JAMIA2020

Ensemble method-based extraction of medication and related information from clinical texts.

Youngjun Kim, Stéphane M Meystre

Abstract read
In one paragraph

Article in Journal of the American Medical Informatics Association : JAMIA, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

22 citing papers in PubMed.

  1. Article
  2. AI-Based Automation for Medication Reconciliation: Scoping Review.Journal of medical Internet research · 2026
    Article
  3. Article
  4. Article
  5. Article
  6. Do LLMs Surpass Encoders for Biomedical NER?Proceedings. IEEE International Conference on Healthcare Informatics · 2025
    Article
  7. Article
  8. Article
  9. Article
  10. Observational
  11. Machine learning approaches for electronic health records phenotyping: a methodical review.Journal of the American Medical Informatics Association : JAMIA · 2023
    Article
  12. Article
  13. Article
  14. Article
  15. Recent Developments in Privacy-Preserving Mining of Clinical Data.ACM/IMS transactions on data science · 2021
    Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. Adverse drug event rates in pediatric pulmonary hypertension: a comparison of real-world data sources.Journal of the American Medical Informatics Association : JAMIA · 2020
    Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

2 authors.

Youngjun KimBiomedical Informatics Center, Medical University of South Carolina, Charleston, South Carolina, USA.
Stéphane M MeystreBiomedical Informatics Center, Medical University of South Carolina, Charleston, South Carolina, USA.

Funding

National NLP Clinical Challenges (n2c2): Challenges in Natural Language Processing for Clinical NarrativesR13LM013127 · NLM · GEORGE MASON UNIVERSITY · PI UZUNER, OZLEM · 2019 to 2023
$100k
Challenges in Natural Language Processing in Clinical TextR13LM011411 · NLM · STATE UNIVERSITY OF NEW YORK AT ALBANY · PI UZUNER, OZLEM · 2012 to 2016
$98k
NLM NIH HHS R13 LM011411NLM NIH HHS R13 LM013127
6 · The paper itself

Abstract

objectiveAccurate and complete information about medications and related information is crucial for effective clinical decision support and precise health care. Recognition and reduction of adverse drug events is also central to effective patient care. The goal of this research is the development of a natural language processing (NLP) system to automatically extract medication and adverse drug event information from electronic health records. This effort was part of the 2018 n2c2 shared task on adverse drug events and medication extraction. MATERIALS AND

methodsThe new NLP system implements a stacked generalization based on a search-based structured prediction algorithm for concept extraction. We trained 4 sequential classifiers using a variety of structured learning algorithms. To enhance accuracy, we created a stacked ensemble consisting of these concept extraction models trained on the shared task training data. We implemented a support vector machine model to identify related concepts.

resultsExperiments with the official test set showed that our stacked ensemble achieved an F1 score of 92.66%. The relation extraction model with given concepts reached a 93.59% F1 score. Our end-to-end system yielded overall micro-averaged recall, precision, and F1 score of 92.52%, 81.88% and 86.88%, respectively. Our NLP system for adverse drug events and medication extraction ranked within the top 5 of teams participating in the challenge.

conclusionThis study demonstrated that a stacked ensemble with a search-based structured prediction algorithm achieved good performance by effectively integrating the output of individual classifiers and could provide a valid solution for other clinical concept extraction tasks.

Indexed as

AlgorithmsDrug-Related Side Effects and Adverse ReactionsElectronic Health RecordsNatural Language ProcessingHumansInformation Storage and RetrievalNarrationdrug-related side effects and adverse reactions [MeSH C25.100]medical informatics [L01.313.500]natural language processing (NLP) [L01.224.050.375.580]neural networks [L01.224.050.375.605]

Identifiers

PMID31282932
PMCPMC7489099

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.