Evidence map›Paper›PMID 34740936›Full record

ArticleBMJ open2021

Safety and immunogenicity of inactivated SARS-CoV-2 vaccines in healthy individuals: protocol for a systematic review and meta-analysis.

Mao Li, Xuhong Yang, Lianyan Jiang, Dongdong Yang

Open access · goldAbstract read
In one paragraph

Article in BMJ open, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed, 1 pooled it
0.1field-weighted citation impact, top 50% 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

2 citing papers in PubMed, 1 synthesis or guideline pooled it, 2 citations in OpenAlex.

  1. Pooled it
  2. Review
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

4 authors at 1 institution in 1 country.

Mao LiDepartment of Neurology, Chengdu University of Traditional Chinese Medicine Affiliated Hospital, Chengdu, Sichuan, China.
Xuhong YangDepartment of Neurology, Chengdu University of Traditional Chinese Medicine Affiliated Hospital, Chengdu, Sichuan, China.
Lianyan JiangDepartment of Neurology, Chengdu University of Traditional Chinese Medicine Affiliated Hospital, Chengdu, Sichuan, China.ORCID 0000-0002-1769-7444
Dongdong YangDepartment of Neurology, Chengdu University of Traditional Chinese Medicine Affiliated Hospital, Chengdu, Sichuan, China dongdongyang2020@163.com.ORCID 0000-0002-7173-5149
Chengdu University of Traditional Chinese Medicine · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionCOVID-19 has spread with high morbidity and mortality worldwide. Many inactivated SARS-CoV-2 vaccines are being tested at various clinical trial stages for the control and prevention of COVID-19. We aim to comprehensively and objectively evaluate the safety and immunogenicity of inactivated SARS-CoV-2 vaccines in healthy individuals through a systematic review and meta-analysis of randomised controlled trials (RCTs). METHODS AND ANALYSIS: We will search electronic databases of PubMed, the Cochrane Library, Web of Science and EMBASE for RCTs from inception to 31 December 2021. We will also search conference abstracts, reference lists, and grey literature of all available records. Two reviewers will independently screen and extract information from the literature. Bias and the quality of included studies will be evaluated with the risk-bias assessment tool provided by the Cochrane Collaboration. Statistical analysis will be performed using Cochrane's Review Manager (RevMan), V.5.3. ETHICS AND DISSEMINATION: Ethics approval and patient informed consent are not required because we will be including published literature only. The findings of this research will be disseminated in a peer-reviewed journal and likely through other scientific events such as conferences, seminars and symposia. PROSPERO REGISTRATION NUMBER: CRD42021266285.

Indexed as

COVID-19SARS-CoV-2COVID-19 VaccinesHumansMeta-Analysis as TopicResearch DesignSystematic Reviews as TopicCOVID-19 VaccinesCOVID-19immunologyinfection control

Identifiers

PMID34740936
PMCPMC8573293
OpenAlexW3208606072

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.