Evidence map›Paper›PMID 33190400›Full record

ArticleInternational journal of laboratory hematology2021

Diagnostic and prognostic utility of WBC counts and cell population data in patients with COVID-19.

Flávio Augusto Naoum, Adriana Laridondo Zucareli Ruiz, Fernando Henrique de Oliveira Martin, Tayra Hostalacio Gomes Brito, Vitoria Hassem, Maria Gabriela de Lucca Oliveira

Abstract readComparative Study
In one paragraph

Article in International journal of laboratory hematology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed
–field-weighted citation impact
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

11 citing papers in PubMed.

  1. Observational
  2. Admission biomarkers and COVID-19 mortality: A retrospective study during Vietnam's pandemic peak.Journal of critical care medicine (Universitatea de Medicina si Farmacie din Targu-Mures) · 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.

Flávio Augusto NaoumUltra X Medical Diagnostic, São José do Rio Preto, Brazil.ORCID https://orcid.org/0000-0003-3093-8270
Adriana Laridondo Zucareli RuizUltra X Medical Diagnostic, São José do Rio Preto, Brazil.
Fernando Henrique de Oliveira MartinUltra X Medical Diagnostic, São José do Rio Preto, Brazil.
Tayra Hostalacio Gomes BritoFaceres Medical School, São José do Rio Preto, Brazil.
Vitoria HassemFaceres Medical School, São José do Rio Preto, Brazil.
Maria Gabriela de Lucca OliveiraUltra X Medical Diagnostic, São José do Rio Preto, Brazil.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionEarly diagnosis and identification of potential critical cases for timely treatment are crucial for COVID-19 patients. The aim of this study was to analyze the diagnostic and prognostic implications of WBC and cell population data (CPD) abnormalities related to COVID-19 at disease onset.

methodsBaseline WBC counts and CPD data were analyzed in one hundred COVID-19 patients presenting to emergency department and subsequently discharged (n=49), admitted (n=51) or deceased (n=22), and in 47 healthy subjects.

resultsLymphopenia and eosinopenia were observed in all COVID-19 patients, with more intensity in the admitted and deceased groups, that also presented increased WBC and neutrophil counts. On CPD analysis, COVID-19 was associated with increased volume of neutrophils, lymphocytes, and monocytes, whereas conductivity was decreased for neutrophils and increased for lymphocytes. The ROC curve analysis showed good performance for lymphocyte counts in predicting COVID-19 diagnosis (AUC=0.858), for neutrophil counts in predicting admission for COVID-19 (AUC=0.744) and for monocytes volume in predicting COVID-19 diagnosis (AUC=0.837).

conclusionWBC counts and CPD parameters at disease onset in COVID-19 patients can improve diagnostic characterization and aid in the discrimination between severe and nonsevere presentations.

Indexed as

Leukocyte CountPandemicsSARS-CoV-2AdultArea Under CurveCOVID-19COVID-19 TestingElectric ConductivityFlow CytometryHumansInpatientsOutpatientsPrognosisRetrospective StudiesRiskROC Curve

Identifiers

PMID33190400
PMCPMC7753689

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Registered trials

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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.