Evidence map›Paper›PMID 31640411›Full record

Observational studyJournal of diabetes science and technology2020

Reproducibility of Fixed-luminance and Multi-luminance Flicker Electroretinography in Patients With Diabetic Retinopathy Using an Office-based Testing Paradigm.

John J Wroblewski, Christa McChancy, Kassandra Pickel, Hunter Buterbaugh, Tyler Wieland, Alberto Gonzalez

Open access · bronzeAbstract readComparative StudyObservational Study
In one paragraph

Observational study in Journal of diabetes science and technology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed
0.4field-weighted citation impact, top 34% 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

5 citing papers in PubMed, 6 citations in OpenAlex.

  1. Intra- and inter-examiner reliability of ERGs recorded with two types of skin electrodes.Documenta ophthalmologica. Advances in ophthalmology · 2026
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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

6 authors at 1 institution in 1 country.

John J WroblewskiCumberland Valley Retina Consultants, Hagerstown, MD, USA.
Christa McChancyCumberland Valley Retina Consultants, Hagerstown, MD, USA.
Kassandra PickelDiopsys, Inc., Pine Brook, NJ, USA.
Hunter ButerbaughCumberland Valley Retina Consultants, Hagerstown, MD, USA.
Tyler WielandCumberland Valley Retina Consultants, Hagerstown, MD, USA.
Alberto GonzalezDiopsys, Inc., Pine Brook, NJ, USA.
Synopsys (United States) · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundWe evaluated the reproducibility of office-based flicker electroretinography (ERG) in patients with nonproliferative diabetic retinopathy (NPDR).

methodsAn observational study was conducted in which ultra-widefield fluorescein angiography (UWF-FA) was performed on 20 patients with mild-to-moderate NPDR; images were graded by the Fundus Photography Reading Center (Department of Ophthalmology and Visual Sciences, University of Wisconsin, Madison, WI, USA). Fixed- and multi-luminance flicker ERG was repeated four times (greater than or equal to seven days apart). Recording consistency was assessed using intra-class correlation coefficients (ICCs), coefficients of variation, and Pearson correlations.

results82.5% and 17.5% of eyes had mild and moderate NPDR using UWF-FA; 90% of the angiograms were given a high confidence grade. Fixed-luminance phase values were highly reproducible (ICC: 0.949;

conclusionsOffice-based, fixed-luminance phase values are highly reproducible and negatively correlate with retinal ischemia in NPDR, suggesting that global retinal dysfunction may be reliably quantified early in patients with diabetes.

Indexed as

ElectroretinographyAdultAgedDiabetic RetinopathyFemaleFluorescein AngiographyHumansMaleMiddle AgedPredictive Value of TestsReproducibility of ResultsRetinaSeverity of Illness Indexdiabetic retinopathydiagnostic testingflicker electroretinography retinal dysfunctionultra-widefield fluorescein angiography

Identifiers

PMID31640411
PMCPMC7645135
OpenAlexW2981871945

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.