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Record W1968588001 · doi:10.1136/bmj.e7401

Uncertainties in baseline risk estimates and confidence in treatment effects

2012· article· en· W1968588001 on OpenAlexaff
Frederick A. Spencer, Alfonso Iorio, John J. You, M. Hassan Murad, Holger J. Schünemann, Per Olav Vandvik, Mark Crowther, Kevin Pottie, Eddy Lang, Joerg J Meerpohl, Yngve Falck–Ytter, Pablo Alonso‐Coello, Gordon Guyatt

Bibliographic record

VenueBMJ · 2012
Typearticle
Languageen
FieldDecision Sciences
TopicMeta-analysis and systematic reviews
Canadian institutionsUniversity of CalgaryUniversity of OttawaMcMaster University
Fundersnot available
KeywordsBaseline (sea)Confidence intervalAbsolute risk reductionStatisticsRelative riskPsychological interventionEconometricsMedicineMathematicsPolitical science

Abstract

fetched live from OpenAlex

The GRADE system provides a framework for evaluating how risk of bias, publication bias, imprecision, inconsistency, and indirectness may reduce confidence in estimates of relative effects of interventions on outcomes. However, GRADE and all other systems for rating confidence in effect estimates do not fully address uncertainty in baseline risk and its impact on confidence in absolute estimates of treatment effect. In this article the authors examine factors that may reduce confidence in estimates of baseline risk and thus estimates of absolute treatment benefit

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)0.470
metaresearch head score (Gemma)0.858
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: Empirical · Consensus signal: none
Teacher disagreement score0.530
Threshold uncertainty score0.653

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.4700.858
Meta-epidemiology (narrow)0.0030.003
Meta-epidemiology (broad)0.0080.014
Bibliometrics0.0120.010
Science and technology studies0.0010.008
Scholarly communication0.0150.014
Open science0.0070.008
Research integrity0.0110.016
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 head0.551
GPT teacher head0.532
Teacher spread0.019 · 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
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

Citations55
Published2012
Admission routes1
Has abstractyes

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