Evidence map›Paper›PMID 32284281›Full record

ArticleHematology, transfusion and cell therapy

Hemoglobin value may be decreased in patients with severe coronavirus disease 2019.

Giuseppe Lippi, Camilla Mattiuzzi

Abstract readLetter
In one paragraph

Article in Hematology, transfusion and cell therapy. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 76 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
76citing 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

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

  1. Comparative analysis of laboratory indexes of severe and non-severe patients infected with COVID-19.Clinica chimica acta; international journal of clinical chemistry · 2020
    Pooled it
  2. Article
  3. Article
  4. Comparison ofJournal of clinical medicine · 2025
    Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Review
  11. Iron and iron-related proteins in COVID-19.Clinical and experimental medicine · 2023
    Review
  12. Article
  13. Review
  14. Article
  15. Article
  16. Review
  17. The sex and gender dimensions of COVID-19: A narrative review of the potential underlying factors.Infection, genetics and evolution : journal of molecular epidemiology and evolutionary genetics in infectious diseases · 2022
    Review
  18. Article
  19. Article
  20. Article

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

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

2 authors.

Giuseppe LippiUniversity of Verona, Verona, Italy. Electronic address: giuseppe.lippi@univr.it.
Camilla MattiuzziService of Clinical Governance, Provincial Agency for Social and Sanitary Services, Trento, Italy.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

PubMed holds no abstract for this paper.

Identifiers

PMID32284281
PMCPMC7128154

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.