Evidence map›Paper›PMID 33128497›Full record

ArticleJournal of clinical laboratory analysis2021

Mean platelet volume/platelet count ratio predicts severe pneumonia of COVID-19.

Qingyang Zhong, Jie Peng

Open access · goldAbstract read
In one paragraph

Article in Journal of clinical laboratory analysis, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 32 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
32citing papers in PubMed, 1 pooled it
4.0field-weighted citation impact, top 5% 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

32 citing papers in PubMed, 1 synthesis or guideline pooled it, 58 citations in OpenAlex.

  1. Pooled it
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  9. The effect of vitamin D deficiency on platelet parameters in patients with COVID-19.Frontiers in cellular and infection microbiology · 2024
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  20. Clinical and Laboratory Approach to Diagnose COVID-19 Using Machine Learning.Interdisciplinary sciences, computational life sciences · 2022
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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

2 authors at 1 institution in 1 country.

Qingyang ZhongDepartment of Infectious Diseases, Nanfang Hospital, Southern Medical University, Guangzhou, China.
Jie PengDepartment of Infectious Diseases, Nanfang Hospital, Southern Medical University, Guangzhou, China.
Southern Medical University · CN

Funding

Guangdong Provincial Department of Education LC2016PY003Major Science and Technology Special Project 2017ZX09304016Major Science and Technology Special Project 2017ZX10302201004008National Natural Science Foundation of China 81971949
6 · The paper itself

Abstract

backgroundAlthough platelet mean volume/platelet count ratio (MPR) is considered to be a crucial marker of inflammatory and infectious diseases, the relationship between MPR and novel coronavirus infectious disease 2019 (COVID-19) remains unclear.

methodsIn this retrospective study, 85 patients with confirmed COVID-19 were enrolled and divided into low and high MPR group. Data from repeated measures were compared by the generalized estimating equations. Cox regression analyses were performed to assess the impact of MPR on the incidence of severe pneumonia (SP), with inverse probability of treatment weighting (IPTW) used to reduce confounding bias. The primary outcome is the incidence of SP of COVID-19.

resultsDuring follow-up, 17 (20.0%) patients were developed to SP. Compared with mild patients, patients with SP developed showed a higher MPR level at baseline, day 1, day 2, and day 3 after admission (P = .005, P = .015, P = .009, and P = .032, respectively). Kaplan-Meier method showed a higher incidence of SP in the high MPR group than the low MPR group (log-rank test = 10.66, P = .001). After adjustment, high MPR was associated with an elevated incidence of SP (HR, 5.841, 95% CI, 1.566-21.791, P = .009). The IPTW method also suggested that MPR was a significant factor related to the incidence of SP (HR, 8.337, 95% CI, 4.045-17.182, P < .001).

conclusionHigh MPR level is an independent risk factor for severe pneumonia in patients with COVID-19.

Indexed as

Mean Platelet VolumePlatelet CountAdultAgedAnti-Bacterial AgentsAntiviral AgentsChloroquineCOVID-19COVID-19 Drug TreatmentFemaleHumansMaleMiddle AgedOxygenPneumonia, ViralRisk FactorsAnti-Bacterial AgentsAntiviral AgentsChloroquineOxygenCOVID-19inflammationnovel coronavirus pneumoniaplatelet mean volume/platelet count ratiosevere pneumonia

Identifiers

PMID33128497
PMCPMC7843293
OpenAlexW3095335916

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.