Evidence map›Paper›PMID 38872319›Full record

ArticleClinical trials (London, England)2025

Scaling and interpreting treatment effects in clinical trials using restricted mean survival time.

Theodore Karrison, Chen Hu, James Dignam

Abstract read
In one paragraph

Article in Clinical trials (London, England), 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing 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

1 citing paper in PubMed.

  1. Article
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

3 authors.

Theodore KarrisonPublic Health Sciences, University of Chicago and NRG/Oncology, Chicago, IL, USA.ORCID 0009-0009-8641-5111
Chen HuJohns Hopkins University and NRG/Oncology, Baltimore, MD, USA.ORCID 0000-0003-4672-1981
James DignamPublic Health Sciences, University of Chicago and NRG/Oncology, Chicago, IL, USA.

Funding

Statistics CoreU10CA180822 · NCI · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI James J. Dignam, GREG YOTHERS · 2014 to 2026
$146.4M
NCI NIH HHS U10 CA180822
6 · The paper itself

Abstract

backgroundRestricted mean survival time is the expected duration of survival up to a chosen time of restriction

methodsIn this article, we describe additional ways of expressing the treatment effect based on restricted means that can be helpful in this regard. These include the ratio of restricted means, the ratio of life-years (or time) lost, and the average integrated difference between the survival curves, equal to the difference in restricted means divided by

resultsThe four effect measures (restricted mean survival time difference, restricted mean survival time ratio, time lost ratio, and average survival rate difference) were 0.45 years, 1.05, 0.81, and 0.038 for RTOG 0521 and 1.36 years, 1.17, 0.56, and 0.12 for RTOG 0534 with

conclusionsIn addition to the difference in restricted mean survival times, these alternative measures can be helpful in determining whether the magnitude of the treatment effect is clinically meaningful.

Indexed as

Randomized Controlled Trials as TopicData Interpretation, StatisticalHumansMaleProstatic NeoplasmsResearch DesignSurvival AnalysisTime FactorsTreatment Outcomeclinically meaningful differenceeffect sizeestimandinterpretationRestricted mean

Identifiers

PMID38872319
PMCPMC11638402

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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.