Evidence map›Paper›PMID 34000830›Full record

Observational studyStroke2021

Predicting 90-Day Outcome After Thrombectomy: Baseline-Adjusted 24-Hour NIHSS Is More Powerful Than NIHSS Score Change.

Eva A Mistry, Sharon Yeatts, Adam de Havenon, Tapan Mehta, Niraj Arora, Felipe De Los Rios La Rosa, Amy K Starosciak, James E Siegler, Akshitkumar M Mistry, Shadi Yaghi and 1 more

Open access · greenAbstract readComparative StudyMulticenter StudyObservational Study
In one paragraph

Observational study in Stroke, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 49 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
49citing papers in PubMed, 2 pooled it
6.9field-weighted citation impact, top 2% 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

49 citing papers in PubMed, 2 syntheses or guidelines pooled it, 75 citations in OpenAlex.

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  19. Predictive Value of RMedicina (Kaunas, Lithuania) · 2025
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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

11 authors at 8 institutions in 2 countries.

Eva A MistryDepartment of Neurology (E.A.M.), Vanderbilt University Medical Center, Nashville, TN.
Sharon YeattsPublic Health Sciences, Medical University of South Carolina, Charleston (S.Y.).
Adam de Havenon
Tapan MehtaAyer Neuroscience Institute, Hartford HealthCare, CT (T.M.).
Niraj AroraDepartment of Neurology, University of Missouri, Columbia (N.A.).
Felipe De Los Rios La RosaBaptist Health Neuroscience Center, Miami, FL (F.D.L.R.L.R., A.K.S.).
Amy K StarosciakBaptist Health Neuroscience Center, Miami, FL (F.D.L.R.L.R., A.K.S.).
James E SieglerDepartment of Neurology, Cooper University Hospital, Camden, NJ (J.E.S.).
Akshitkumar M MistryDepartment of Neurosurgery (A.M.M.), Vanderbilt University Medical Center, Nashville, TN.
Shadi YaghiDepartment of Neurology, New York Langone Health (S.Y.).
Pooja KhatriDepartment of Neurology and Rehabilitation Medicine, University of Cincinnati, OH (P.K.).
Baptist Health South Florida · USVanderbilt University Medical Center · USCooper University Hospital · USMedical University of South Carolina · USMinistry of AYUSH · INNYU Langone Health · USUniversity of Cincinnati · USUniversity of Missouri · US

Funding

Ohio Valley Regional Coordinating Center for NINDS Stroke Trial NetworkU24NS107241 · NINDS · UNIVERSITY OF CINCINNATI · PI Stacie Demel, Eva Mistry · 2018 to 2026
$2.9M
Blood Pressure after Endovascular Stroke Therapy-II: A Randomized TrialK23NS113858 · NINDS · VANDERBILT UNIVERSITY MEDICAL CENTER · PI MISTRY, EVA · 2019 to 2023
$901k
NINDS NIH HHS K23 NS113858NINDS NIH HHS U24 NS107241
6 · The paper itself

Abstract

background and purposeThe National Institutes of Health Stroke Scale (NIHSS) measured at an early time point is an appealing surrogate marker for long-term functional outcome of stroke patients treated with endovascular therapy. However, definitions and analytical methods for an early NIHSS-based outcome measure that optimize power and precision in clinical studies are not well-established.

methodsIn this post-hoc analysis of our prospective observational study that enrolled endovascular therapy-treated patients at 12 comprehensive stroke centers across the US, we compared the ability of 24-hour NIHSS, ΔNIHSS (baseline minus 24-hour NIHSS), and percentage change (NIHSS×100/baseline NIHSS), analyzed as continuous and dichotomous measures, to predict 90-day modified Rankin Scale (mRS) using logistic regression (adjusted for age, baseline NIHSS, glucose, hypertension, Alberta Stroke Program Early CT Score, time to recanalization, recanalization status, and intravenous thrombolysis) and Spearman ρ.

resultsOf 485 patients in the BEST (Blood Pressure After Endovascular Stroke Therapy) cohort, 446 (92%) with 90-day follow-up data were included. An absolute 24-hour NIHSS, adjusted for baseline in multivariable modeling, had the highest predictive power of all definitions evaluated (aR

conclusionsTwenty-four-hour NIHSS, adjusted for baseline, was the strongest predictor of both dichotomous and ordinal 90-day mRS outcomes for endovascular therapy-treated patients. A dichotomous 24-hour NIHSS score of ≤7 was the second-best predictor. Although ΔNIHSS, continuous and dichotomized at ≥4, predicted 90-day outcomes, absolute 24-hour NIHSS definitions performed better.

Indexed as

AgedAged, 80 and overBrain IschemiaFemaleFollow-Up StudiesHumansMaleMiddle AgedNational Institutes of Health (U.S.)Predictive Value of TestsProspective StudiesStrokeThrombectomyTime FactorsTreatment OutcomeUnited StatesglucosehypertensionNational Institutes of Healthodds ratiothrombectomy

Identifiers

PMID34000830
PMCPMC11261999
OpenAlexW3161171477

What OpenQuestion holds

Textmetadata
LicenceTDM
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.