Evidence map›Paper›PMID 32928847›Full record

ArticleBMJ open2020

Factors associated with thrombocytopenia in patients with dengue fever: a retrospective cohort study.

Bruna M Castilho, Marcus T Silva, André R R Freitas, Izabela Fulone, Luciane Cruz Lopes

Open access · goldAbstract read
In one paragraph

Article in BMJ open, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed, 4 pooled it
2.3field-weighted citation impact, top 10% 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

17 citing papers in PubMed, 4 syntheses or guidelines pooled it, 35 citations in OpenAlex.

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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

5 authors at 3 institutions in 1 country.

Bruna M CastilhoSchool of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, São Paulo, Brazil.
Marcus T SilvaPharmaceutical Sciences Graduate Course, University of Sorocaba (UNISO), Sorocaba, São Paulo, Brazil.ORCID 0000-0002-7186-9075
André R R FreitasFaculdade São Leopoldo Mandic, Campinas, São Paulo, Brazil.
Izabela FulonePharmaceutical Sciences Graduate Course, University of Sorocaba (UNISO), Sorocaba, São Paulo, Brazil.
Luciane Cruz LopesPharmaceutical Sciences Graduate Course, University of Sorocaba (UNISO), Sorocaba, São Paulo, Brazil luslopesbr@gmail.com.ORCID 0000-0002-3684-3275
Universidade de Sorocaba · BRFaculdade São Leopoldo Mandic · BRUniversidade Estadual Paulista (Unesp) · BR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveSome patients with dengue fever tend to develop thrombocytopenia during the course of infection and are thus vulnerable to haemorrhagic manifestations and other complications. However, the factors associated with the development of thrombocytopenia are unknown. We aimed to identify factors associated with an increased risk of thrombocytopenia and haematological changes in patients with confirmed dengue fever.

designRetrospective cohort study.

settingBrazilian multicentre primary care databases.

participants387 patients had positive laboratory serological confirmation of dengue infection during 2014. The data were identified from two databases: Notification of Injury Information System (SINAN) and Municipal Laboratory.

main outcome measureThe presence of thrombocytopenia (platelet count <1 50×10

resultsAmong 387 patients, 156 had both dengue and thrombocytopenia. The risk factors associated with thrombocytopenia included male sex (OR: 1.77, 95% CI: 1.16 to 2.71, p=0.007), age of 46-64 years (OR: 2.20, 95% CI: 1.15 to 4.21, p=0.009) or ≥65 years (OR: 3.02, 95% CI: 1.40 to 6.50, p=0.002), presence of leucopenia (OR: 6.85, 95% CI: 4.27 to 10.99, p<0.001) and high mean corpuscular haemoglobin (MCH) levels (OR: 2.00, 95% CI: 1.29 to 3.12, p=0.005).

conclusionOlder age, male sex, presence of leucopenia and high MCH levels were identified as risk factors associated with the development of thrombocytopenia in this population.

Indexed as

DengueThrombocytopeniaAgedBrazilHumansMaleMiddle AgedPlatelet CountRetrospective Studiesepidemiologypublic healthvirology

Identifiers

PMID32928847
PMCPMC7488788
OpenAlexW3084610823

What OpenQuestion holds

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LicenceCC BY-NC
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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.