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Record W4235968888 · doi:10.1136/bmj.m3907

GRADE approach to drawing conclusions from a network meta-analysis using a partially contextualised framework

2020· review· en· W4235968888 on OpenAlexaff
Romina Brignardello‐Petersen, Ariel Izcovich, Bram Rochwerg, Iván D. Flórez, Glen Hazlewood, Waleed Alhazanni, Juan José Yepes-Núñez, Nancy Santesso, Gordon Guyatt, Holger J. Schünemann

Bibliographic record

VenueBMJ · 2020
Typereview
Languageen
FieldDecision Sciences
TopicMeta-analysis and systematic reviews
Canadian institutionsUniversity of CalgaryMcMaster UniversityMcMaster University Medical CentreImpact
Fundersnot available
KeywordsGrading (engineering)Psychological interventionOutcome (game theory)Meta-analysisCertaintyPsychologyComputer scienceMedicineMathematicsEngineering

Abstract

fetched live from OpenAlex

This article describes GRADE (grading of recommendations assessment, development and evaluation) guidance on how to make conclusions from a network meta-analysis of interventions that includes individual randomised controlled trials for one outcome at a time. The guidance is based on a partially contextualised approach in which review authors must establish ranges of magnitudes of effect that represent a trivial to no effect, small but important effect, moderate effect, and large effect. The principles guiding this framework are that interventions should be grouped in categories, based on the magnitude of the effect; and that the judgments that place interventions in such categories should consider the estimates of effect, the certainty of the evidence, and the rankings. We describe and illustrate the four steps of this framework using an example.

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)0.414
metaresearch head score (Gemma)0.704
Version: metacan-v3-hybrid-931329e0061cValidation status: machine_predicted_unvalidated
Candidate categoriesMetaresearch
Consensus categoriesMetaresearch
DomainCandidate signal: Methods · Consensus signal: Methods
Study designCandidate signal: Theoretical or conceptual · Consensus signal: none
GenreCandidate signal: Methods · Consensus signal: Methods
Teacher disagreement score0.586
Threshold uncertainty score0.723

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.4140.704
Meta-epidemiology (narrow)0.0080.005
Meta-epidemiology (broad)0.0170.029
Bibliometrics0.0460.023
Science and technology studies0.0030.007
Scholarly communication0.0150.011
Open science0.0130.016
Research integrity0.0100.020
Insufficient payload (model declined to judge)0.0230.005

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 head0.904
GPT teacher head0.595
Teacher spread0.309 · 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; the direct Gemma label and the distilled Codex classifier agree on what is shown here.

Study designTheoretical or conceptual
DomainMethods
GenreMethods

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

Citations151
Published2020
Admission routes1
Has abstractyes

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