Evidence map›Paper›PMID 32577736›Full record

ArticleJournal of athletic training2020

Utility of 1 Measurement Versus Multiple Measurements of Near Point of Convergence After Concussion.

Nathan Ernst, Philip Schatz, Alicia M Trbovich, Kouros Emami, Shawn R Eagle, Anne Mucha, Michael W Collins, Anthony P Kontos

Registry-linked trialOpen access · diamondAbstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Journal of athletic training, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT05649566 (Intervention of Virtual Reality on Oculomotor Muscles and Balance), which is not on this map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed
1.0field-weighted citation impact, top 23% 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.

NCT05649566 nacompletednot on this mapstarted 2022, after this paper: background citation

Intervention of Virtual Reality on Oculomotor Muscles and Balance

TypeinterventionalSponsorEscoles Universitaries GimbernatRan2022 to 2022Enrolled34ConditionsPostural BalanceArmsVirtual Reality game
3 · Its place in the literature

Who cites it

2 citing papers in PubMed, 8 citations in OpenAlex.

  1. Article
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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

8 authors at 2 institutions in 1 country.

Nathan ErnstDepartment of Orthopaedic Surgery, University of Pittsburgh, PA.
Philip SchatzSaint Joseph's University, Philadelphia, PA.
Alicia M TrbovichDepartment of Orthopaedic Surgery, University of Pittsburgh, PA.
Kouros EmamiDepartment of Orthopaedic Surgery, University of Pittsburgh, PA.
Shawn R EagleDepartment of Orthopaedic Surgery, University of Pittsburgh, PA.
Anne MuchaUPMC Center for Rehab Services, University of Pittsburgh, PA.
Michael W CollinsDepartment of Orthopaedic Surgery, University of Pittsburgh, PA.
Anthony P KontosDepartment of Orthopaedic Surgery, University of Pittsburgh, PA.
University of Pittsburgh · USSaint Joseph's University · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

contextIncreased near point of convergence (NPC) distance is a common finding after concussion and is associated with physical symptoms and worsened neurocognitive performance. Vestibular/Ocular Motor Screening measures NPC distance across 3 trials and uses the average measurement to inform clinical care. However, whether 3 trials are necessary, are consistent, or add clinical utility is unknown.

objectiveTo investigate the consistency across 3 trials of NPC and establish the classification accuracy (ie, clinical utility) of 1 or 2 trials compared with the standardized average of 3 trials.

designRetrospective cohort study.

settingSports medicine clinic and research laboratory. PATIENTS OR OTHER

participantsConsecutively enrolled patients aged 10 to 22 years with diagnosed concussions (74% sport related; n = 380). MAIN OUTCOME MEASURE(S): The previously reported clinical cutoff value of ≥5 cm across 3 trials was used. Pearson correlation and intraclass correlation coefficients were used to evaluate agreement between trials and average scores. Reliable change indices (RCIs) using 95% confidence intervals were also calculated.

resultsThe Pearson correlation (r = .98) and intraclass correlation (0.98) coefficients revealed excellent agreement between the first measurement and average NPC distance across 3 measurements. The RCI across all trials was 2 cm. When the first NPC measurement was ≤3 cm or ≥7 cm, agreement existed within the RCI between the first measurement and the average of 3 measurements in 99.6% of cases. When we averaged the first and second measurements, 379/380 (99.7%) participants had the same classification (ie, <5 cm = normal, ≥5 cm = abnormal) as the average NPC distance across 3 measurements.

conclusionsOur findings suggest limited utility of multiple or average NPC distance measurements when the initial NPC distance is outside of RCI clinical cutoffs (ie, ≤3 cm or ≥7 cm). Given the high consistency between the first measurement and average NPC distance across 3 trials, only 1 measurement of NPC distance is warranted unless the first measurement is between 3 and 7 cm.

Indexed as

Brain ConcussionAdolescentAthletic InjuriesChildCognitionConvergence, OcularFemaleHumansMaleMass ScreeningPhysical Functional PerformancePsychomotor PerformanceRetrospective StudiesVestibular Function TestsYoung Adultconvergencemild traumatic brain injuryVestibular/Ocular Motor Screening (VOMS)

Identifiers

PMID32577736
PMCPMC7462169
OpenAlexW3037907777

What OpenQuestion holds

Textmetadata
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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.