Evidence map›Paper›PMID 35026994›Full record

ArticleBMC medical research methodology2022

Prediction of acute appendicitis among patients with undifferentiated abdominal pain at emergency department.

Dai Su, Qinmengge Li, Tao Zhang, Philip Veliz, Yingchun Chen, Kevin He, Prashant Mahajan, Xingyu Zhang

Open access · goldAbstract read
In one paragraph

Article in BMC medical research methodology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed, 1 pooled it
5.9field-weighted citation impact, top 3% of its field
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

12 citing papers in PubMed, 1 synthesis or guideline pooled it, 25 citations in OpenAlex.

  1. Using natural language processing in emergency medicine health service research: A systematic review and meta-analysis.Academic emergency medicine : official journal of the Society for Academic Emergency Medicine · 2024
    Pooled it
  2. Review
  3. Artificial intelligence for early diagnosis in emergency department.Journal of anesthesia, analgesia and critical care · 2026
    Review
  4. Review
  5. Article
  6. Review
  7. Article
  8. Article
  9. Article
  10. Article
  11. Value of fecal calprotectin in prediction of acute appendicitis based on a proposed model of machine learning.Ulusal travma ve acil cerrahi dergisi = Turkish journal of trauma & emergency surgery : TJTES · 2023
    Article
  12. 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

8 authors at 5 institutions in 2 countries.

Dai SuDepartment of Health Management and Policy, School of Public Health, Capital Medical University, Beijing, China.
Qinmengge LiDepartment of Systems, Populations, and Leadership, University of Michigan School of Nursing, Ann Arbor, USA.
Tao ZhangDepartment of Epidemiology and Biostatistics, West China School of Public Health School, Sichuan University, Chengdu, China.
Philip VelizDepartment of Systems, Populations, and Leadership, University of Michigan School of Nursing, Ann Arbor, USA.
Yingchun ChenDepartment of Health Management, School of Medicine and Health Management, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
Kevin HeDepartment of Biostatistics, University of Michigan School of Public Health, Ann Arbor, USA.
Prashant MahajanDepartment of Emergency Medicine, University of Michigan School of Medicine, Ann Arbor, USA.
Xingyu ZhangThomas E. Starzl Transplantation Institute, University of Pittsburgh Medical Center, Pittsburgh, USA. zhangx28@upmc.edu.ORCID 0000-0001-8108-1997
University of Michigan · USCapital Medical University · CNHuazhong University of Science and Technology · CNSichuan University · CNUniversity of Pittsburgh Medical Center · US

Funding

Michigan Institute for Clinical and Health Research (MICHR)UL1TR002240 · NCATS · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI LUMENG, JULIE C, MASHOUR, GEORGE ALEXANDER · 2017 to 2022
$54.9M
NCATS NIH HHS UL1 TR002240
6 · The paper itself

Abstract

backgroundEarly screening and accurately identifying Acute Appendicitis (AA) among patients with undifferentiated symptoms associated with appendicitis during their emergency visit will improve patient safety and health care quality. The aim of the study was to compare models that predict AA among patients with undifferentiated symptoms at emergency visits using both structured data and free-text data from a national survey.

methodsWe performed a secondary data analysis on the 2005-2017 United States National Hospital Ambulatory Medical Care Survey (NHAMCS) data to estimate the association between emergency department (ED) patients with the diagnosis of AA, and the demographic and clinical factors present at ED visits during a patient's ED stay. We used binary logistic regression (LR) and random forest (RF) models incorporating natural language processing (NLP) to predict AA diagnosis among patients with undifferentiated symptoms.

resultsAmong the 40,441 ED patients with assigned International Classification of Diseases (ICD) codes of AA and appendicitis-related symptoms between 2005 and 2017, 655 adults (2.3%) and 256 children (2.2%) had AA. For the LR model identifying AA diagnosis among adult ED patients, the c-statistic was 0.72 (95% CI: 0.69-0.75) for structured variables only, 0.72 (95% CI: 0.69-0.75) for unstructured variables only, and 0.78 (95% CI: 0.76-0.80) when including both structured and unstructured variables. For the LR model identifying AA diagnosis among pediatric ED patients, the c-statistic was 0.84 (95% CI: 0.79-0.89) for including structured variables only, 0.78 (95% CI: 0.72-0.84) for unstructured variables, and 0.87 (95% CI: 0.83-0.91) when including both structured and unstructured variables. The RF method showed similar c-statistic to the corresponding LR model.

conclusionsWe developed predictive models that can predict the AA diagnosis for adult and pediatric ED patients, and the predictive accuracy was improved with the inclusion of NLP elements and approaches.

Indexed as

AppendicitisAbdominal PainAcute DiseaseAdultChildEmergency Service, HospitalHealth Care SurveysHumansUnited StatesAcute appendicitisEmergency departmentMachine learningPrecision healthPrediction modelling

Identifiers

PMID35026994
PMCPMC8759254
OpenAlexW4206752341

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.