Evidence map›Paper›PMID 33368415›Full record

SynthesisStatistics in medicine2021

Comparing methods for estimating patient-specific treatment effects in individual patient data meta-analysis.

Michael Seo, Ian R White, Toshi A Furukawa, Hissei Imai, Marco Valgimigli, Matthias Egger, Marcel Zwahlen, Orestis Efthimiou

Abstract readMeta-Analysis
In one paragraph

Synthesis in Statistics in medicine, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed, 4 pooled it
–field-weighted citation impact
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

20 citing papers in PubMed, 4 syntheses or guidelines pooled it.

  1. Pooled it
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  14. Methods for Integrating Trials and Non-experimental Data to Examine Treatment Effect Heterogeneity.Statistical science : a review journal of the Institute of Mathematical Statistics · 2023
    Article
  15. Article
  16. Article
  17. Decision Curve Analysis for Personalized Treatment Choice between Multiple Options.Medical decision making : an international journal of the Society for Medical Decision Making · 2023
    Article
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  19. 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.

Michael SeoInstitute of Social and Preventive Medicine, University of Bern, Bern, Switzerland.ORCID 0000-0002-5229-590X
Ian R WhiteMRC Clinical Trials Unit, Institute of Clinical Trials and Methodology, University College London, London, UK.ORCID 0000-0002-6718-7661
Toshi A FurukawaDepartments of Health Promotion and Human Behavior and of Clinical Epidemiology, Kyoto University Graduate School of Medicine/School of Public Health, Kyoto, Japan.ORCID 0000-0003-2159-3776
Hissei ImaiDepartments of Health Promotion and Human Behavior and of Clinical Epidemiology, Kyoto University Graduate School of Medicine/School of Public Health, Kyoto, Japan.ORCID 0000-0003-3656-5188
Marco ValgimigliDepartment of Cardiology, Bern University Hospital, University of Bern, Bern, Switzerland.ORCID 0000-0002-4353-7110
Matthias EggerInstitute of Social and Preventive Medicine, University of Bern, Bern, Switzerland.ORCID 0000-0001-7462-5132
Marcel ZwahlenInstitute of Social and Preventive Medicine, University of Bern, Bern, Switzerland.ORCID 0000-0002-6772-6346
Orestis EfthimiouInstitute of Social and Preventive Medicine, University of Bern, Bern, Switzerland.ORCID 0000-0002-0955-7572

Funding

Medical Research Council MC_UU_12023/21
6 · The paper itself

Abstract

Meta-analysis of individual patient data (IPD) is increasingly used to synthesize data from multiple trials. IPD meta-analysis offers several advantages over meta-analyzing aggregate data, including the capacity to individualize treatment recommendations. Trials usually collect information on many patient characteristics. Some of these covariates may strongly interact with treatment (and thus be associated with treatment effect modification) while others may have little effect. It is currently unclear whether a systematic approach to the selection of treatment-covariate interactions in an IPD meta-analysis can lead to better estimates of patient-specific treatment effects. We aimed to answer this question by comparing in simulations the standard approach to IPD meta-analysis (no variable selection, all treatment-covariate interactions included in the model) with six alternative methods: stepwise regression, and five regression methods that perform shrinkage on treatment-covariate interactions, that is, least absolute shrinkage and selection operator (LASSO), ridge, adaptive LASSO, Bayesian LASSO, and stochastic search variable selection. Exploring a range of scenarios, we found that shrinkage methods performed well for both continuous and dichotomous outcomes, for a variety of settings. In most scenarios, these methods gave lower mean squared error of the patient-specific treatment effect as compared with the standard approach and stepwise regression. We illustrate the application of these methods in two datasets from cardiology and psychiatry. We recommend that future IPD meta-analysis that aim to estimate patient-specific treatment effects using multiple effect modifiers should use shrinkage methods, whereas stepwise regression should be avoided.

Indexed as

Bayes TheoremHumansRegression AnalysisBayesian analysisindividual patient datameta-regressionshrinkagevariable selection

Identifiers

PMID33368415
PMCPMC7898845

What OpenQuestion holds

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Registered trials

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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.