Evidence map›Paper›PMID 29356350›Full record

ArticleInfluenza and other respiratory viruses2018

1918 pandemic morbidity: The first wave hits the poor, the second wave hits the rich.

Svenn-Erik Mamelund

Open access · goldAbstract readHistorical Article
In one paragraph

Article in Influenza and other respiratory viruses, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
6.1field-weighted citation impact, top 3% 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

21 citing papers in PubMed, 66 citations in OpenAlex.

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  16. Outcomes in Hispanics With COVID-19 Are Similar to Those of Caucasian Patients in Suburban New York.Academic emergency medicine : official journal of the Society for Academic Emergency Medicine · 2020
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  17. Article
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  19. Race and 1918 Influenza Pandemic in the United States: A Review of the Literature.International journal of environmental research and public health · 2019
    Review
  20. Article
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

1 author at 1 institution in 2 countries.

Svenn-Erik MamelundWork Research Institute, OsloMet-Oslo Metropolitan University, Oslo, Norway.ORCID 0000-0002-3980-3818
OsloMet – Oslo Metropolitan University · NO

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundWhether morbidity from the 1918-19 influenza pandemic discriminated by socioeconomic status has remained a subject of debate for 100 years. In lack of data to study this issue, the recent literature has hypothesized that morbidity was "socially neutral."

objectivesTo study the associations between influenza-like illness (ILI) and socioeconomic status (SES), gender, and wave during the 1918-19 influenza pandemic.

methodsAvailability of incidence data on the 1918-19 pandemic is scarce, in particular for waves other than the "fall wave" October-December 1918. Here, an overlooked survey from Bergen, Norway (n = 10 633), is used to study differences in probabilities of ILI and ILI probability ratios by apartment size as a measure of SES and gender for 3 waves including the waves prior to and after the "fall wave."

resultsSocioeconomic status was negatively associated with ILI in the first wave, but positively associated in the second wave. At all SES levels, men had the highest ILI in the summer, while women had the highest ILI in the fall. There were no SES or gender differences in ILI in the winter of 1919.

conclusionsFor the first time, it is documented a crossover in the role of socioeconomic status in 1918 pandemic morbidity. The poor came down with influenza first, while the rich with less exposure in the first wave had the highest morbidity in the second wave. The study suggests that the socioeconomically disadvantaged should be prioritized if vaccines are of limited availability in a future pandemic.

Indexed as

Social ClassFemaleHistory, 20th CenturyHousingHumansInfluenza, HumanInfluenza Pandemic, 1918-1919MaleMorbidityNorwayPandemicsPovertySex FactorsVaccination1918-19 influenza pandemicapartment sizecross-protectiongenderinfluenza-like illnessmorbidity crossoversocioeconomic status

Identifiers

PMID29356350
PMCPMC5907814
OpenAlexW2792930574

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.