Evidence map›Paper›PMID 33444216›Full record

ArticleBMJ open2020

Influenza-associated cardiovascular mortality in older adults in Beijing, China: a population-based time-series study.

Rong Liu, Xiaoshuang Liu, Peng Yang, Xin Du, Liu He, Tiange Chen, Xiang Li, Guotong Xie, Shuangsheng Wu, Jianting Su and 8 more

Open access · goldAbstract read
In one paragraph

Article in BMJ open, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed, 1 pooled it
2.2field-weighted citation impact, top 11% 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

14 citing papers in PubMed, 1 synthesis or guideline pooled it, 24 citations in OpenAlex.

  1. Pooled it
  2. Review
  3. Review
  4. Article
  5. Article
  6. Observational
  7. Article
  8. Article
  9. What if flu vaccination is the most responsible thing to do for cardiovascular health in the upcoming season?European heart journal supplements : journal of the European Society of Cardiology · 2023
    Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Trends and Inequalities in the Incidence of Acute Myocardial Infarction among Beijing Townships, 2007-2018.International journal of environmental research and public health · 2021
    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

18 authors at 8 institutions in 3 countries.

Rong Liu *Heart Health Research Center, Beijing, China.ORCID 0000-0002-8609-5463
Xiaoshuang Liu *Ping An Healthcare Technology, Beijing, China.
Peng Yang *Beijing Center for Disease Prevention and Control, Beijing Research Center for Preventive Medicine, Beijing, China.
Xin DuHeart Health Research Center, Beijing, China.
Liu HeBeijing Anzhen Hospital, Capital Medical University, National Clinical Research Centre for Cardiovascular Diseases, Beijing, China.
Tiange ChenPing An Healthcare Technology, Beijing, China.
Xiang LiPing An Healthcare Technology, Beijing, China.
Guotong XiePing An Healthcare Technology, Beijing, China.
Shuangsheng WuBeijing Center for Disease Prevention and Control, Beijing Research Center for Preventive Medicine, Beijing, China.
Jianting SuBeijing Center for Disease Prevention and Control, Beijing Research Center for Preventive Medicine, Beijing, China.
Shijun XiaBeijing Anzhen Hospital, Capital Medical University, National Clinical Research Centre for Cardiovascular Diseases, Beijing, China.
Chao JiangBeijing Anzhen Hospital, Capital Medical University, National Clinical Research Centre for Cardiovascular Diseases, Beijing, China.ORCID 0000-0003-1138-7960
Mark D HuffmanThe George Institute for Global Health, University of New South Wales, Sydney, New South Wales, Australia.
Chandini Raina MacIntyreBiosecurity Research Program, Kirby Institute, The University of New South Wales, Sudney, New South Wales, Australia.
Zaihua WeiBeijing Center for Disease Prevention and Control, Beijing Research Center for Preventive Medicine, Beijing, China.
Quanyi WangBeijing Center for Disease Prevention and Control, Beijing Research Center for Preventive Medicine, Beijing, China bjcdcxm@126.com.
Jianzeng DongBeijing Anzhen Hospital, Capital Medical University, National Clinical Research Centre for Cardiovascular Diseases, Beijing, China.
Craig AndersonThe George Institute for Global Health, University of New South Wales, Sydney, New South Wales, Australia.
Beijing Center for Disease Prevention and Control · CNCapital Medical University · CNPing An (China)China National Health Development Research Center · CNCloud Computing Center · CNNorthwestern University · USPeking University · CNUNSW Sydney · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveThis study comprehensively estimated the excess cardiovascular disease (CVD) mortality attributable to influenza in an older (age ≥65 years) population.

designEcological study.

settingAggregated data from administrative systems on CVD mortality, influenza surveillance and meteorological data in Beijing, China.

main outcome measureExcess overall CVD, and separately for ischaemic heart disease (IHD), ischaemic stroke, haemorrhagic stroke mortality attributable to influenza, adjusting for influenza activity, time trend, seasonality and ambient temperature.

resultsCVD (risk ratio (RR) 1.02, 95% CI 1.01, 1.02), IHD (RR 1.01, 95% CI 1.01, 1.02), ischaemic stroke (RR=1.03, 95% CI 1.02, 1.04), but not haemorrhagic stroke (RR=1.00, 95% CI 0.99, 1.01) mortality, were significantly associated with every 10% increase in influenza activity. An increase in circulating A(H1N1)09pdm, A(H3N2) and B type virus were all significantly associated with CVD and ischaemic stroke mortality, but only A(H3N2) and B type virus with IHD mortality. The strongest increase in disease mortality was in the same week as the increase in influenza activity. Annual excess CVD mortality rate attributable to influenza ranged from 54 to 96 per 100 000 population. The 3%-6% CVD mortality attributable to influenza activity was related to an annual excess of 916-1640 CVD deaths in Beijing, China.

conclusionsInfluenza activity has moderate to strong associations with CVD, IHD and ischaemic stroke mortality in older adults in China. Promoting influenza vaccination could have major health benefit in this population.

backgroundInfluenza may trigger serious CVD events. An estimation of excess CVD mortality attributable to influenza has particular relevance in China where vaccination is low and CVD burden is high.

methodsThis study analysed data at the population level (age ≥65 years) using linked aggregated data from administrative systems on CVD mortality, influenza surveillance and meteorological data during 2011 to 2018. Quasi-Poisson regression models were used to estimate the excess overall CVD, and separately for IHD, ischaemic stroke, haemorrhagic stroke mortality attributable to influenza, adjusting for influenza activity, time trend, seasonality and ambient temperature. Analyses were also undertaken for influenza subtypes (A(H1N1)09pdm, A(H3N2) and B viruses), and mortality risk with time lags of 1-5 weeks following influenza activity in the current week.

Indexed as

Cardiovascular DiseasesInfluenza A Virus, H1N1 SubtypeInfluenza, HumanBeijingChinaHumansInfluenza A Virus, H3N2 Subtypecardiologyepidemiologyinfectious diseases

Identifiers

PMID33444216
PMCPMC7678395
OpenAlexW3102009603

What OpenQuestion holds

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LicenceCC BY-NC
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Registered trials

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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.