Evidence map›Paper›PMID 33333477›Full record

ArticleThe American journal of emergency medicine2021

Increased age, neutrophil-to-lymphocyte ratio (NLR) and white blood cells count are associated with higher COVID-19 mortality.

Elnaz Vafadar Moradi, Ali Teimouri, Ramin Rezaee, Negar Morovatdar, Mahdi Foroughian, Parvaneh Layegh, Behrang Rezvani Kakhki, Seyed Reza Ahmadi Koupaei, Vahideh Ghorani

Open access · greenAbstract read
In one paragraph

Article in The American journal of emergency medicine, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 72 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
72citing papers in PubMed, 2 pooled it
2.8field-weighted citation impact, top 6% 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

72 citing papers in PubMed, 2 syntheses or guidelines pooled it, 140 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Trial
  4. Trial
  5. Article
  6. Review
  7. Article
  8. Article
  9. Article
  10. Article
  11. Review
  12. 3 Biotech · 2025
    Article
  13. Article
  14. Article
  15. Article
  16. Review
  17. Article
  18. Article
  19. Article
  20. Article

12 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

9 authors at 2 institutions in 1 country.

Elnaz Vafadar MoradiEmergency Department, Faculty of Medicine, Mashhad University of Medical Science, Mashhad, Iran. Electronic address: VafadarME@gmail.com.
Ali TeimouriStudent research Committee, Faculty of Medicine, Mashhad University of Medical Science, Mashhad, Iran.
Ramin RezaeeClinical Research Unit, Imam Reza Hospital, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran; Neurogenic Inflammation Research Center, Mashhad University of Medical Sciences, Mashhad, Iran.
Negar MorovatdarClinical Research Unit, Imam Reza Hospital, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.
Mahdi ForoughianEmergency Department, Faculty of Medicine, Mashhad University of Medical Science, Mashhad, Iran.
Parvaneh LayeghRadiology department, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.
Behrang Rezvani KakhkiEmergency Department, Faculty of Medicine, Mashhad University of Medical Science, Mashhad, Iran.
Seyed Reza Ahmadi KoupaeiEmergency Department, Faculty of Medicine, Mashhad University of Medical Science, Mashhad, Iran.
Vahideh GhoraniClinical Research Unit, Imam Reza Hospital, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.
Mashhad University of Medical Sciences · IRImam Reza Hospital · IR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveCoronavirus disease 19 (COVID-19) caused by the highly pathogenic SARS-CoV-2, was first reported from Wuhan, China, in December 2019. The present study assessed possible associations between one-month mortality and demographic data, SpO

methodsPatients admitted to Imam Reza hospital, affiliated to Mashhad University of Medical Sciences, Mashhad, Iran, from March to June 2020, with positive RT-PCR results for SARS-CoV-2, were included in this study. Kaplan-Meier survival analysis and Cox proportional hazard model were used to respectively estimate one-month mortality since admission and determine factors associated with one-month mortality.

resultsIn this retrospective cohort study, 219 patients were included (137 men and 82 women (mean age 58.2 ± 16 and 57 ± 17.3 years old, respectively)). Hypertension, ischemic heart disease and diabetes were respectively the most common comorbidities. Among these patients, 63 patients were admitted to the ICU and 31 deaths occurred during one-month follow-up. With respect to mean peripheral capillary oxygen saturation (SpO

conclusionMultivariate analysis introduced age, WBC count, and NLR as predictors of one-month mortality in COVID-19 patients.

Indexed as

LeukocytesLymphocytesNeutrophilsAdultAgedAge FactorsCohort StudiesCOVID-19FemaleHumansLeukocyte CountLymphocyte CountMaleMiddle AgedRetrospective StudiesRisk FactorsCoronavirusCOVID-19Survival

Identifiers

PMID33333477
PMCPMC7717776
OpenAlexW3107084261

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.