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Record W2148502931 · doi:10.1017/s0714980813000275

Validating Chronic Disease Ascertainment Algorithms for Use in the Canadian Longitudinal Study on Aging*

2013· article· fr· W2148502931 on OpenAlexafffundabout
Mark Oremus, Ronald B. Postuma, Lauren E. Griffith, Cynthia Balion, Christina Wolfson, Susan Kirkland, Christopher Patterson, Harry S. Shannon

Bibliographic record

VenueCanadian Journal on Aging / La Revue canadienne du vieillissement · 2013
Typearticle
Languagefr
FieldEconomics, Econometrics and Finance
TopicHealth Systems, Economic Evaluations, Quality of Life
Canadian institutionsHamilton Health SciencesDalhousie UniversityMcGill University Health CentreMcGill UniversityMontreal General HospitalMcMaster University
FundersCanadian Institutes of Health Research
KeywordsAlgorithmDiseaseGerontologyComputer scienceMedicinePathology

Abstract

fetched live from OpenAlex

RÉSUMÉ Nous avons validé sept algorithmes d’évaluation de maladie chronique pour l’usage dans L’Étude longitudinale canadienne (ÉLCV) sur le vieillissement. Les algorithmes ont concerné le diabète type 2, parkinsonisme, obstruction chronique de flux d’air, ostéoarthrite de main, ostéoarthrite de hanche, ostéoarthrite de genou, et la maladie cardiaque ischémique. Notre recrutement de cible était 20 cas et contrôles par chaque maladie. Quelques cas ont été utilisés comme contrôles avec certaines maladies. Tous les participants ont répondu à des questionnaires au sujet des symptômes de la maladie et d’utilisation de médicaments. Les cas et les contrôles de diabète ont subi le test de jeûne de glucose et les cas et les contrôles de l’obstruction chronique de flux d’air ont subi le test de spirométrie. Pour chaque maladie, nous avons utilisé l’algorithme adapté pour classifier si les participants étaient positifs ou négatif pour la maladie. Nous avons également calculé la sensibilité et la spécificité utilisant le diagnostic de médecin comme norme. L’échantillon final a fait participer 176 participants, qui ont été recrutés dans trois villes canadiennes entre 2009 et 2011. La plupart des sensibilités et spécificités étaient 80% ou plus, indiquant que les sept algorithmes peuvent correctement identifier des personnes avec les maladies.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

How this classification was reachedexpand

Full frame machine prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.

metaresearch head score (Codex)0.053
metaresearch head score (Gemma)0.145
Version: metacan-v3-hybrid-931329e0061cValidation status: machine_predicted_unvalidated
Candidate categoriesMetaresearch
Consensus categoriesnone
DomainCandidate signal: Methods · Consensus signal: none
Study designCandidate signal: Observational · Consensus signal: Observational
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.987
Threshold uncertainty score0.324

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0530.145
Meta-epidemiology (narrow)0.0010.001
Meta-epidemiology (broad)0.0010.002
Bibliometrics0.0060.005
Science and technology studies0.0030.001
Scholarly communication0.0040.001
Open science0.0030.002
Research integrity0.0010.002
Insufficient payload (model declined to judge)0.0030.001

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.225
GPT teacher head0.370
Teacher spread0.145 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it

Classification

machine, unvalidated

Machine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.

Study designObservational
DomainMethods
GenreEmpirical

How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".

Quick stats

Citations11
Published2013
Admission routes3
Has abstractyes

Explore more

Same venueCanadian Journal on Aging / La Revue canadienne du vieillissementSame topicHealth Systems, Economic Evaluations, Quality of LifeFrench-language works237,207