Evidence map›Paper›PMID 24525488›Full record

ArticleStatistical methods in medical research2016

Evaluating treatment effectiveness under model misspecification: A comparison of targeted maximum likelihood estimation with bias-corrected matching.

Noémi Kreif, Susan Gruber, Rosalba Radice, Richard Grieve, Jasjeet S Sekhon

Abstract readComparative Study
In one paragraph

Article in Statistical methods in medical research, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
–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.

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  17. Machine Learning in Orthopedics: A Literature Review.Frontiers in bioengineering and biotechnology · 2018
    Review
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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

5 authors.

Noémi KreifDepartment of Health Services Research and Policy, London School of Hygiene and Tropical Medicine, London, UK noemi.kreif@lshtm.ac.uk.
Susan GruberDepartment of Epidemiology, Harvard School of Public Health, Boston, MA, USA.
Rosalba RadiceBirkbeck, University of London, London, UK.
Richard GrieveDepartment of Health Services Research and Policy, London School of Hygiene and Tropical Medicine, London, UK.
Jasjeet S SekhonBirkbeck, University of London, London, UK.

Funding

Department of Health PDA/03/07/026Medical Research Council G106/1173
6 · The paper itself

Abstract

Statistical approaches for estimating treatment effectiveness commonly model the endpoint, or the propensity score, using parametric regressions such as generalised linear models. Misspecification of these models can lead to biased parameter estimates. We compare two approaches that combine the propensity score and the endpoint regression, and can make weaker modelling assumptions, by using machine learning approaches to estimate the regression function and the propensity score. Targeted maximum likelihood estimation is a double-robust method designed to reduce bias in the estimate of the parameter of interest. Bias-corrected matching reduces bias due to covariate imbalance between matched pairs by using regression predictions. We illustrate the methods in an evaluation of different types of hip prosthesis on the health-related quality of life of patients with osteoarthritis. We undertake a simulation study, grounded in the case study, to compare the relative bias, efficiency and confidence interval coverage of the methods. We consider data generating processes with non-linear functional form relationships, normal and non-normal endpoints. We find that across the circumstances considered, bias-corrected matching generally reported less bias, but higher variance than targeted maximum likelihood estimation. When either targeted maximum likelihood estimation or bias-corrected matching incorporated machine learning, bias was much reduced, compared to using misspecified parametric models.

Indexed as

Likelihood FunctionsModels, StatisticalAgedBiasComputer SimulationConfidence IntervalsData Interpretation, StatisticalHip ProsthesisHumansMachine LearningMaleOsteoarthritisQuality of LifeTreatment Outcomebias-corrected matchingdouble robustnessmachine learningmodel misspecificationtargeted maximum likelihood estimationtreatment effectiveness

Identifiers

PMID24525488
PMCPMC5051604

What OpenQuestion holds

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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.