Evidence map›Paper›PMID 33119835›Full record

ArticleEmergency radiology2020

Qualitative and quantitative chest CT parameters as predictors of specific mortality in COVID-19 patients.

Davide Colombi, Gabriele D Villani, Gabriele Maffi, Camilla Risoli, Flavio C Bodini, Marcello Petrini, Nicola Morelli, Pietro Anselmi, Gianluca Milanese, Mario Silva and 2 more

Abstract read
In one paragraph

Article in Emergency radiology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed, 1 pooled it
–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

25 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
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  8. Insights from 3D modeling and fluid dynamics in COVID-19 pneumonia.Medical & biological engineering & computing · 2024
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  17. Predictors of intubation and mortality in COVID-19 patients: a retrospective study.Journal of anesthesia, analgesia and critical care · 2021
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  19. Cardiovascular findings on chest computed tomography associated with COVID-19 adverse clinical outcomes.American heart journal plus : cardiology research and practice · 2021
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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

12 authors.

Davide ColombiDepartment of Radiological Functions, Radiology Unit, "Guglielmo da Saliceto" Hospital, Via Taverna 49, 29121, Piacenza, Italy. D.Colombi@ausl.pc.it.ORCID https://orcid.org/0000-0002-2794-5237
Gabriele D VillaniDepartment of Radiological Functions, Radiology Unit, "Guglielmo da Saliceto" Hospital, Via Taverna 49, 29121, Piacenza, Italy.
Gabriele MaffiDepartment of Radiological Functions, Radiology Unit, "Guglielmo da Saliceto" Hospital, Via Taverna 49, 29121, Piacenza, Italy.
Camilla RisoliDepartment of Radiological Functions, Radiology Unit, "Guglielmo da Saliceto" Hospital, Via Taverna 49, 29121, Piacenza, Italy.
Flavio C BodiniDepartment of Radiological Functions, Radiology Unit, "Guglielmo da Saliceto" Hospital, Via Taverna 49, 29121, Piacenza, Italy.
Marcello PetriniDepartment of Radiological Functions, Radiology Unit, "Guglielmo da Saliceto" Hospital, Via Taverna 49, 29121, Piacenza, Italy.
Nicola MorelliDepartment of Radiological Functions, Radiology Unit, "Guglielmo da Saliceto" Hospital, Via Taverna 49, 29121, Piacenza, Italy.
Pietro AnselmiDepartment of Radiological Functions, Radiology Unit, "Guglielmo da Saliceto" Hospital, Via Taverna 49, 29121, Piacenza, Italy.
Gianluca MilaneseDepartment of Medicine and Surgery (DiMeC), Unit "Scienze Radiologiche", University of Parma, Padiglione Barbieri, V. Gramsci 14, Parma, Italy.
Mario SilvaDepartment of Medicine and Surgery (DiMeC), Unit "Scienze Radiologiche", University of Parma, Padiglione Barbieri, V. Gramsci 14, Parma, Italy.
Nicola SverzellatiDepartment of Medicine and Surgery (DiMeC), Unit "Scienze Radiologiche", University of Parma, Padiglione Barbieri, V. Gramsci 14, Parma, Italy.
Emanuele MichielettiDepartment of Radiological Functions, Radiology Unit, "Guglielmo da Saliceto" Hospital, Via Taverna 49, 29121, Piacenza, Italy.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTo test the association between death and both qualitative and quantitative CT parameters obtained visually and by software in coronavirus disease (COVID-19) early outbreak.

methodsThe study analyzed retrospectively patients underwent chest CT at hospital admission for COVID-19 pneumonia suspicion, between February 21 and March 6, 2020. CT was performed in case of hypoxemia or moderate-to-severe dyspnea. CT scans were analyzed for quantitative and qualitative features obtained visually and by software. Cox proportional hazards regression analysis examined the association between variables and overall survival (OS). Three models were built for stratification of mortality risk: clinical, clinical/visual CT evaluation, and clinical/software-based CT assessment. AUC for each model was used to assess performance in predicting death.

resultsThe study included 248 patients (70% males, median age 68 years). Death occurred in 78/248 (32%) patients. Visual pneumonia extent > 40% (HR 2.15, 95% CI 1.2-3.85, P = 0.01), %high attenuation area - 700 HU > 35% (HR 2.17, 95% CI 1.2-3.94, P = 0.01), exudative consolidations (HR 2.85-2.93, 95% CI 1.61-5.05/1.66-5.16, P < 0.001), visual CAC score > 1 (HR 2.76-3.32, 95% CI 1.4-5.45/1.71-6.46, P < 0.01/P < 0.001), and CT classified as COVID-19 and other disease (HR 1.92-2.03, 95% CI 1.01-3.67/1.06-3.9, P = 0.04/P = 0.03) were significantly associated with shorter OS. Models including CT parameters (AUC 0.911-0.913, 95% CI 0.873-0.95/0.875-0.952) were better predictors of death as compared to clinical model (AUC 0.869, 95% CI 0.816-0.922; P = 0.04 for both models).

conclusionsIn COVID-19 patients, qualitative and quantitative chest CT parameters obtained visually or by software are predictors of mortality. Predictive models including CT metrics were better predictors of death in comparison to clinical model.

Indexed as

AgedBetacoronavirusCoronavirus InfectionsCOVID-19FemaleHumansMalePandemicsPneumonia, ViralPredictive Value of TestsRadiographic Image Interpretation, Computer-AssistedRadiography, ThoracicRetrospective StudiesSARS-CoV-2SoftwareTomography, X-Ray ComputedComputer Software ApplicationsCOVID-19CT scanSurvival analysis

Identifiers

PMID33119835
PMCPMC7594966

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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.