Evidence map›Paper›PMID 29096678›Full record

Trial reportTrials2017

Minimal sufficient balance randomization for sequential randomized controlled trial designs: results from the ESCAPE trial.

Tolulope T Sajobi, Gurbakhshash Singh, Mark W Lowerison, Jordan Engbers, Bijoy K Menon, Andrew M Demchuk, Mayank Goyal, Michael D Hill

Registry-linked trialOpen access · goldAbstract readMulticenter StudyRandomized Controlled Trial
In one paragraph

Trial report in Trials, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT01778335 (Endovascular Treatment for Small Core and Anterior Circulation Proximal Occlusion With Emphasis on Minimizing CT to Recanalization Times), which is not on this map. Cited by 5 papers.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed
0.9field-weighted citation impact, top 25% 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.

NCT01778335 phase3terminatednot on this map

Endovascular Treatment for Small Core and Anterior Circulation Proximal Occlusion With Emphasis on Minimizing CT to Recanalization Times (ESCAPE) Trial

TypeinterventionalSponsorUniversity of CalgaryRan2013 to 2015Enrolled316ConditionsIschemic StrokeArmsEndovascular thrombectomy/thrombolysis
3 · Its place in the literature

Who cites it

5 citing papers in PubMed, 9 citations in OpenAlex.

  1. Trial
  2. Article
  3. Article
  4. Article
  5. 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

8 authors at 1 institution in 2 countries.

Tolulope T SajobiDepartment of Community Health Sciences and O'Brien Institute for Public Health, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada.
Gurbakhshash SinghDepartment of Community Health Sciences and O'Brien Institute for Public Health, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada.
Mark W LowerisonDepartment of Community Health Sciences and O'Brien Institute for Public Health, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada.
Jordan EngbersClinical Research Unit, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada.
Bijoy K MenonDepartment of Community Health Sciences and O'Brien Institute for Public Health, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada.
Andrew M DemchukDepartment of Clinical Neurosciences, Cumming School of Medicine, University of Calgary, 3300 Hospital Drive NW, Calgary, AB, T2N 4N1, Canada.
Mayank GoyalDepartment of Clinical Neurosciences, Cumming School of Medicine, University of Calgary, 3300 Hospital Drive NW, Calgary, AB, T2N 4N1, Canada.
Michael D HillDepartment of Community Health Sciences and O'Brien Institute for Public Health, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada. michael.hill@ucalgary.ca.
University of Calgary · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundWe describe the implementation of minimal sufficient balance randomization, a covariate-adaptive randomization technique, used for the "Endovascular treatment for Small Core and Anterior circulation Proximal occlusion with Emphasis on minimizing CT to recanalization times" (ESCAPE) trial.

methodsThe ESCAPE trial is a prospective, multicenter, randomized clinical trial that enrolled subjects with the following main inclusion criteria: less than 12 h from symptom onset, age 18 years or older, baseline NIHSS score > 5, ASPECTS score > 5 and computed tomography angiography (CTA) evidence of carotid T/L or M1-segment middle cerebral artery (MCA) occlusion, and at least moderate collaterals by CTA. Patients were randomized using a real-time, dynamic, Internet-based, minimal sufficient balance randomization method that balanced the study arms with respect to baseline covariates including age, sex, baseline NIHSS score, site of arterial occlusion, baseline ASPECTS score and treatment with intravenously administered alteplase.

resultsPermutation-based tests of group differences confirmed group balance across several baseline covariates including sex (p = 1.00), baseline NIHSS score (p = 0.95), site of arterial occlusion (p = 1.00), baseline ASPECTS score (p = 0.28), treatment with intravenously administered alteplase (p = 0.31), and age (p = 0.67).

conclusionResults from the ESCAPE trial demonstrate the feasibility and the benefit of this covariate adaptive randomization scheme in small-sample trials and for data monitoring endeavors.

trial registrationESCAPE trial - NCT01778335 - at www.clinicaltrials.gov . Registered on 29 January 2013.

Indexed as

Endovascular ProceduresRandom AllocationResearch DesignThrombolytic TherapyAdministration, IntravenousAgedAged, 80 and overCerebral AngiographyCerebrovascular CirculationComputed Tomography AngiographyData Interpretation, StatisticalDisability EvaluationFemaleFibrinolytic AgentsHumansInfarction, Middle Cerebral ArteryFibrinolytic AgentsTissue Plasminogen ActivatorData monitoringEndovascular therapyMinimal sufficient balanceRandomizationStroke trial

Identifiers

PMID29096678
PMCPMC5667454
OpenAlexW2765242708

What OpenQuestion holds

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LicenceCC BY
Read underepoch 390

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.