Evidence map›Paper›PMID 29619782›Full record

ArticleKorean journal of anesthesiology2018

Introduction to systematic review and meta-analysis.

EunJin Ahn, Hyun Kang

Abstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Korean journal of anesthesiology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 183 papers, 62 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
183citing papers in PubMed, 62 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

183 citing papers in PubMed, 62 syntheses or guidelines pooled it.

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  3. The efficacy of various treatment modalities and their combinations in improving survival outcomes for anaplastic thyroid cancer: a systematic review and network meta-analysis.European archives of oto-rhino-laryngology : official journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery · 2026
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  4. Efficacy and safety of cetuximab-based versus platinum-based chemoradiation in HNSCC: evidence from a meta-analysis of 10 randomized controlled trials.Clinical & translational oncology : official publication of the Federation of Spanish Oncology Societies and of the National Cancer Institute of Mexico · 2026
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123 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.

EunJin AhnDepartment of Anesthesiology and Pain Medicine, Inje University Seoul Paik Hospital, Seoul, Korea.ORCID 0000-0001-6321-5285
Hyun KangDepartment of Anesthesiology and Pain Medicine, Chung-Ang University College of Medicine, Seoul, Korea.ORCID 0000-0003-2844-5880

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Systematic reviews and meta-analyses present results by combining and analyzing data from different studies conducted on similar research topics. In recent years, systematic reviews and meta-analyses have been actively performed in various fields including anesthesiology. These research methods are powerful tools that can overcome the difficulties in performing large-scale randomized controlled trials. However, the inclusion of studies with any biases or improperly assessed quality of evidence in systematic reviews and meta-analyses could yield misleading results. Therefore, various guidelines have been suggested for conducting systematic reviews and meta-analyses to help standardize them and improve their quality. Nonetheless, accepting the conclusions of many studies without understanding the meta-analysis can be dangerous. Therefore, this article provides an easy introduction to clinicians on performing and understanding meta-analyses.

Indexed as

AnesthesiologyMeta-analysisRandomized controlled trialSystematic review

Identifiers

PMID29619782
PMCPMC5903119

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.