Evidence map›Paper›PMID 26238958›Full record

SynthesisStatistics in medicine2015

Moving towards best practice when using inverse probability of treatment weighting (IPTW) using the propensity score to estimate causal treatment effects in observational studies.

Peter C Austin, Elizabeth A Stuart

6 registry-linked trialsAbstract readSystematic Review
In one paragraph

Synthesis in Statistics in medicine, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to 6 registered trials, which are not on this map. Cited by 2,195 papers.

0numbers the graph read from it
0cells of the map it votes in
2,195citing 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.

NCT03754075 unknown statusnot on this map

Five Year Oncological Outcome After Complete Mesocolic Excision for Right-sided Colon Cancer: a Population-based Cohort Study

TypeobservationalSponsorNordsjaellands HospitalRan2008 to 2019Enrolled1,069ConditionsColonic NeoplasmsArmsComplete mesocolic excision, Conventional colon resections
NCT03774134 unknown statusnot on this map

Five Year Oncological Outcome After Complete Mesocolic Excision for Sigmoid Colon Cancer: a Population-based Cohort Study

TypeobservationalSponsorNordsjaellands HospitalRan2008 to 2025Enrolled920ConditionsSigmoid NeoplasmsArmsComplete mesocolic excision, Conventional colon resection
NCT04510948 nacompletednot on this mapstarted 2020, after this paper: background citation

Patient Priority Care for Older Adults With Multiple Chronic Conditions Achieved Through Primary and Specialty Care Alignment

TypeinterventionalSponsorThe Cleveland ClinicRan2020 to 2023Enrolled264ConditionsMultiple Chronic ConditionsArmsPatient Priorities Care
NCT05437939 active not recruitingnot on this mapstarted 2022, after this paper: background citation

Identifying Opportunities for Prevention of Adverse Outcomes Following Female Genital

TypeobservationalSponsorUniversity of California, San FranciscoRan2022 to 2026Enrolled802ConditionsFemale Genital Fistula, Incontinence
NCT06666647 active not recruitingnot on this mapstarted 2025, after this paper: background citation

Ambulance and Helicopter Response Times in Danish Emergency Medical Services: Protocol for an Epidemiological Study. The AHRTEMIS Study

TypeobservationalSponsorPeter Martin HansenRan2025 to 2026Enrolled2,500,000ConditionsEmergency Medical Services, Response, Triage, Survival OutcomesArmsTreatment by ambulance or helicopter services with response times
NCT07098078 completednot on this map

Domperidone Dose and the Risk of Serious Adverse Events in Older Adults With Advanced Chronic Kidney Disease: A Population-Based Cohort Study Research Protocol

TypeobservationalSponsorLondon Health Sciences Centre Research Institute OR Lawson Research Institute of St. Joseph'sRan2008 to 2024Enrolled15,000ConditionsChronic Kidney Disease (CKD)ArmsDomperidone (drug)
3 · Its place in the literature

Who cites it

2,195 citing papers in PubMed.

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  12. Initial empiric carbapenem versus non-carbapenem β-lactam/β-lactamase inhibitor therapy in sepsis across simplified SENECA phenotypes: a retrospective study of two independent cohorts.European journal of clinical microbiology & infectious diseases : official publication of the European Society of Clinical Microbiology · 2026
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2,135 more citing papers are in PubMed but not listed here.

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

2 authors.

Peter C AustinInstitute for Clinical Evaluative Sciences, Toronto, Ontario, Canada.
Elizabeth A StuartDepartment of Mental Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, U.S.A.

Funding

Using propensity scores for causal inference with covariate measurement errorR01MH099010 · NIMH · JOHNS HOPKINS UNIVERSITY · PI STUART, ELIZABETH A. · 2013 to 2016
$1.1M
CIHR MOP 86508NIMH NIH HHS R01 MH099010NIMH NIH HHS R01MH099010
6 · The paper itself

Abstract

The propensity score is defined as a subject's probability of treatment selection, conditional on observed baseline covariates. Weighting subjects by the inverse probability of treatment received creates a synthetic sample in which treatment assignment is independent of measured baseline covariates. Inverse probability of treatment weighting (IPTW) using the propensity score allows one to obtain unbiased estimates of average treatment effects. However, these estimates are only valid if there are no residual systematic differences in observed baseline characteristics between treated and control subjects in the sample weighted by the estimated inverse probability of treatment. We report on a systematic literature review, in which we found that the use of IPTW has increased rapidly in recent years, but that in the most recent year, a majority of studies did not formally examine whether weighting balanced measured covariates between treatment groups. We then proceed to describe a suite of quantitative and qualitative methods that allow one to assess whether measured baseline covariates are balanced between treatment groups in the weighted sample. The quantitative methods use the weighted standardized difference to compare means, prevalences, higher-order moments, and interactions. The qualitative methods employ graphical methods to compare the distribution of continuous baseline covariates between treated and control subjects in the weighted sample. Finally, we illustrate the application of these methods in an empirical case study. We propose a formal set of balance diagnostics that contribute towards an evolving concept of 'best practice' when using IPTW to estimate causal treatment effects using observational data.

Indexed as

Observational Studies as TopicOutcome Assessment, Health CarePropensity ScoreHumansModels, StatisticalMonte Carlo Methodcausal inferenceinverse probability of treatment weightingIPTWobservational studypropensity score

Identifiers

PMID26238958
PMCPMC4626409

What OpenQuestion holds

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LicenceCC BY-NC-ND
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Registered trials

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.