Evidence map›Paper›PMID 21894044›Full record

Trial reportNeuroepidemiology2011

Application of beta regression to analyze ischemic stroke volume in NINDS rt-PA clinical trials.

Christopher J Swearingen, Barbara C Tilley, Robert J Adams, Zoran Rumboldt, Joyce S Nicholas, Dipankar Bandyopadhyay, Robert F Woolson

Open access · bronzeAbstract readComparative StudyRandomized Controlled Trial
In one paragraph

Trial report in Neuroepidemiology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed, 1 pooled it
1.2field-weighted citation impact, top 21% of its field
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

10 citing papers in PubMed, 1 synthesis or guideline pooled it, 27 citations in OpenAlex.

  1. Thrombolysis for acute ischaemic stroke.The Cochrane database of systematic reviews · 2014
    Pooled it
  2. Article
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  6. Nutlin-3 treatment spares cisplatin-induced inhibition of bone healing while maintaining osteosarcoma toxicity.Journal of orthopaedic research : official publication of the Orthopaedic Research Society · 2016
    Article
  7. Article
  8. Cisplatin inhibits bone healing during distraction osteogenesis.Journal of orthopaedic research : official publication of the Orthopaedic Research Society · 2014
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  10. 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

7 authors at 4 institutions in 1 country.

Christopher J SwearingenDepartment of Pediatrics, University of Arkansas for Medical Sciences, Little Rock, AR 72202, USA. cswearingen@uams.edu
Barbara C Tilley
Robert J Adams
Zoran Rumboldt
Joyce S Nicholas
Dipankar Bandyopadhyay
Robert F Woolson
Medical University of South Carolina · USThe University of Texas Health Science Center at Houston · USUniversity of Arkansas for Medical Sciences · USUniversity of Minnesota · US

Funding

THE ROLE OF THE RNA BINDING PROTEIN LA IN ORAL TUMOR BIOLOGYP20RR017696 · NCRR · MEDICAL UNIVERSITY OF SOUTH CAROLINA · PI SOMMER, GUNHILD · 2002 to 2011
$20.7M
Parkinson's Disease Clinical Trial: Statistical CenterU01NS043127 · NINDS · UNIVERSITY OF TEXAS HLTH SCI CTR HOUSTON · PI LUO, SHENG · 2001 to 2015
$8.0M
Biostatistics Training with Application to NeuroscienceT32NS048007 · NINDS · MEDICAL UNIVERSITY OF SOUTH CAROLINA · PI PALESCH, YUKO Y · 2005 to 2009
$632k
NCRR NIH HHS P20 RR017696NCRR NIH HHS P20 RR017696-06NINDS NIH HHS T32 NS048007NINDS NIH HHS T32 NS48007-01A1NINDS NIH HHS U01 NS043127NINDS NIH HHS U01NS043127
6 · The paper itself

Abstract

background and purposeIschemic stroke lesion volumes have proven difficult to analyze due to the extremely skewed shape of their underlying distribution. We introduce an extension of generalized linear models, beta regression, as a possible method of modeling extremely skewed distributions as evidenced in ischemic stroke lesion volumes.

methodsThe NINDS rt-PA clinical trials measured ischemic stroke lesion volume as a secondary trial outcome. Three-month lesion volumes from these trials were analyzed using beta regression. A multi-variable regression model associating explanatory variables with ischemic stroke lesion volumes was constructed using accepted model building strategies and compared with the previously published volumetric analysis.

resultsBeta regression produced a similar model when compared to the previous analysis published by the study group. All previously identified variables of importance were detected in the model building process. The age by treatment interaction described in previous studies was also found in this analysis, confirming the strong effect age has on stroke outcomes. Further, a treatment effect was elicited in terms of odds ratios, yielding a previously unknown quantification of the effect of rt-PA on lesion volumes.

conclusionsBeta regression proved adept in modeling ischemic stroke lesions and offered the interpretation of covariates in terms of odds ratios. Beta regression is seen as a legitimate alternative to analyze ischemic stroke volumes.

Indexed as

National Institute of Neurological Disorders and Stroke (U.S.)AgedBrain IschemiaDouble-Blind MethodFemaleHumansMaleMiddle AgedRegression AnalysisStrokeStroke VolumeTissue Plasminogen ActivatorUnited StatesTissue Plasminogen Activator

Identifiers

PMID21894044
PMCPMC3186717
OpenAlexW2143226103

What OpenQuestion holds

Textmetadata
Read underepoch 390

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.