Evidence map›Paper›PMID 32592705›Full record

ArticleThe Journal of infection2020

Serum ferritin as an independent risk factor for severity in COVID-19 patients.

Zhi Lin, Fei Long, Yong Yang, Xiangyu Chen, Linyong Xu, Minghua Yang

Abstract readLetterComment
In one paragraph

Article in The Journal of infection, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 103 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
103citing papers in PubMed, 3 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

103 citing papers in PubMed, 3 syntheses or guidelines pooled it.

  1. Pooled it
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  4. Trial
  5. Trial
  6. Long COVID-19 in Hospitalized and Ambulatory Children in Jamaica.The Pediatric infectious disease journal · 2026
    Observational
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43 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

6 authors.

Zhi LinDepartment of Pediatrics, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China; Department of Pediatrics, The Third Xiangya Hospital, Central South University, Changsha, Hunan, 410013, China.
Fei LongDepartment of Gastrointestinal Surgery, The Third Xiangya Hospital, Central South University, Changsha, Hunan 410013, China.
Yong YangDepartment of Intensive Care Unit, Changsha Central Hospital of Nanhua University, Changsha, Hunan 410011, China.
Xiangyu ChenDepartment of Radiology, The Second Xiangya Hospital, Central South University, Changsha, Hunan, 410011, China.
Linyong XuDepartment of Epidemiology and Health Statistics, Xiangya School of Public Health, Central South University, Changsha, Hunan, 410006, China. Electronic address: linyongxu@gmail.com.
Minghua YangDepartment of Pediatrics, The Third Xiangya Hospital, Central South University, Changsha, Hunan, 410013, China. Electronic address: yangminghua@csu.edu.cn.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

PubMed holds no abstract for this paper.

Indexed as

CoronavirusCoronavirus InfectionsPandemicsPneumonia, ViralBetacoronavirusBiomarkersCOVID-19FerritinsHumansPrognosisRisk FactorsSARS-CoV-2Serum Amyloid A ProteinBiomarkersFerritinsSerum Amyloid A Protein

Identifiers

PMID32592705
PMCPMC7313486

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.