Evidence map›Paper›PMID 32935059›Full record

ArticleInternational journal of population data science2020

Developing and Validating a Primary Care EMR-based Frailty Definition using Machine Learning.

PhD Tyler Williamson, Sylvia Aponte-Hao, Bria Mele, Brendan Cord Lethebe, Charles Leduc, Manpreet Thandi, Alan Katz, Sabrina T Wong

Open access · goldAbstract read
In one paragraph

Article in International journal of population data science, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed, 2 pooled it
1.6field-weighted citation impact, top 17% 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

16 citing papers in PubMed, 2 syntheses or guidelines pooled it, 25 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
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  5. External validation of an AI-based preoperative frailty index using real-world data.The journals of gerontology. Series A, Biological sciences and medical sciences · 2025
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  15. Machine learning for identification of frailty in Canadian primary care practices.International journal of population data science · 2021
    Article
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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 3 institutions in 3 countries.

PhD Tyler WilliamsonDepartment of Community Health Sciences, Cumming School of Medicine, University of Calgary.
Sylvia Aponte-HaoDepartment of Community Health Sciences, Cumming School of Medicine, University of Calgary.
Bria MeleDepartment of Community Health Sciences, Cumming School of Medicine, University of Calgary.
Brendan Cord LethebeCentre for Health Informatics, Cumming School of Medicine, University of Calgary.
Charles LeducDepartment of Family Medicine, Cumming School of Medicine, University of Calgary.
Manpreet ThandiSchool of Nursing, University of British Columba.
Alan KatzDepartments of Family Medicine and Community Health Sciences, Manitoba Centre for Health Policy, University of Manitoba.
Sabrina T WongSchool of Nursing, University of British Columba.
University of Calgary · CAUniversity of British Columbia · CAManitoba Health · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionIndividuals who have been identified as frail have an increased state of vulnerability, often leading to adverse health events, increased health spending, and potentially detrimental outcomes.

objectiveThe objective of this work is to develop and validate a case definition for frailty that can be used in a primary care electronic medical record database.

methodsThis is a cross-sectional validation study using data from the Canadian Primary Care Sentinel Surveillance Network (CPCSSN) in Southern Alberta. 52 CPCSSN sentinels assessed a random sample of their own patients using the Rockwood Clinical Frailty scale, resulting in a total of 875 patients to be used as reference standard. Patients must be over the age of 65 and have had a clinic visit within the last 24 months. The case definition for frailty was developed using machine learning methods using CPCSSN records for the 875 patients.

resultsOf the 875 patients, 155 (17.7%) were frail and 720 (84.2%) were not frail. Validation metrics of the case definition were: sensitivity and specificity of 0.28, 95% CI (0.21 to 0.36) and 0.94, 95% CI (0.93 to 0.96), respectively; PPV and NPV of 0.53, 95% CI (0.42 to 0.64) and 0.86, 95% CI (0.83 to 0.88), respectively.

conclusionsThe low sensitivity and specificity results could be because frailty as a construct remains under-developed and relatively poorly understood due to its complex nature. These results contribute to the literature by demonstrating that case definitions for frailty require expert consensus and potentially more sophisticated algorithms to be successful.

Identifiers

PMID32935059
PMCPMC7477778
OpenAlexW3082148444

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.