Evidence map›Paper›PMID 33152376›Full record

ArticleThe Journal of infection2021

First and second COVID-19 waves in Japan: A comparison of disease severity and characteristics.

Sho Saito, Yusuke Asai, Nobuaki Matsunaga, Kayoko Hayakawa, Mari Terada, Hiroshi Ohtsu, Shinya Tsuzuki, Norio Ohmagari

Abstract readLetterComment
In one paragraph

Article in The Journal of infection, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 113 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
113citing papers in PubMed, 2 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

113 citing papers in PubMed, 2 syntheses or guidelines pooled it.

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

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

8 authors.

Sho SaitoDisease Control and Prevention Center, National Center for Global Health and Medicine, Tokyo, Japan. Electronic address: ssaito@hosp.ncgm.go.jp.
Yusuke AsaiAMR Clinical Reference Center, National Center for Global Health and Medicine, Tokyo, Japan.
Nobuaki MatsunagaAMR Clinical Reference Center, National Center for Global Health and Medicine, Tokyo, Japan.
Kayoko HayakawaDisease Control and Prevention Center, National Center for Global Health and Medicine, Tokyo, Japan; AMR Clinical Reference Center, National Center for Global Health and Medicine, Tokyo, Japan.
Mari TeradaDisease Control and Prevention Center, National Center for Global Health and Medicine, Tokyo, Japan; Center for Clinical Sciences, National Center for Global Health and Medicine, Tokyo, Japan.
Hiroshi OhtsuCenter for Clinical Sciences, National Center for Global Health and Medicine, Tokyo, Japan.
Shinya TsuzukiAMR Clinical Reference Center, National Center for Global Health and Medicine, Tokyo, Japan; Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp, Belgium.
Norio OhmagariDisease Control and Prevention Center, National Center for Global Health and Medicine, Tokyo, Japan; AMR Clinical Reference Center, National Center for Global Health and Medicine, Tokyo, Japan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

PubMed holds no abstract for this paper.

Indexed as

COVID-19HumansJapanLength of StayRisk FactorsSARS-CoV-2Severity of Illness IndexCharacteristicsCovid-19MortalitySeverity

Identifiers

PMID33152376
PMCPMC7605825

What OpenQuestion holds

Textmetadata
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.