Evidence map›Paper›PMID 31471442›Full record

Observational studyBMJ open2019

Association between smoking and in-hospital mortality in patients with acute myocardial infarction: results from a prospective, multicentre, observational study in China.

Chenxi Song, Rui Fu, Kefei Dou, Jingang Yang, Haiyan Xu, Xiaojin Gao, Hao Wang, Shuai Liu, Xiaoxue Fan, Yuejin Yang

Registry-linked trialAbstract readMulticenter StudyObservational Study
In one paragraph

Observational study in BMJ open, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT01874691 (China Acute Myocardial Infarction Registry), which is not on this map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
–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.

NCT01874691 completednot on this map

China Acute Myocardial Infarction Registry

Typeobservational_patient_registrySponsorChinese Academy of Medical Sciences, Fuwai HospitalRan2013 to 2016Enrolled20,000ConditionsAcute Myocardial Infarction
3 · Its place in the literature

Who cites it

12 citing papers in PubMed.

  1. Article
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  4. Review
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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

10 authors.

Chenxi Song *Coronary Heart Disease Center, Fuwai Hospital, Chinese Academy of Medical Sciences, National Center for Cardiovascular Diseases and Peking Union Medical College, Beijing, China.
Rui Fu *Coronary Heart Disease Center, Fuwai Hospital, Chinese Academy of Medical Sciences, National Center for Cardiovascular Diseases and Peking Union Medical College, Beijing, China.
Kefei Dou *Coronary Heart Disease Center, Fuwai Hospital, Chinese Academy of Medical Sciences, National Center for Cardiovascular Diseases and Peking Union Medical College, Beijing, China.
Jingang YangCoronary Heart Disease Center, Fuwai Hospital, Chinese Academy of Medical Sciences, National Center for Cardiovascular Diseases and Peking Union Medical College, Beijing, China.
Haiyan XuCoronary Heart Disease Center, Fuwai Hospital, Chinese Academy of Medical Sciences, National Center for Cardiovascular Diseases and Peking Union Medical College, Beijing, China.
Xiaojin GaoCoronary Heart Disease Center, Fuwai Hospital, Chinese Academy of Medical Sciences, National Center for Cardiovascular Diseases and Peking Union Medical College, Beijing, China.
Hao WangCoronary Heart Disease Center, Fuwai Hospital, Chinese Academy of Medical Sciences, National Center for Cardiovascular Diseases and Peking Union Medical College, Beijing, China.
Shuai LiuCoronary Heart Disease Center, Fuwai Hospital, Chinese Academy of Medical Sciences, National Center for Cardiovascular Diseases and Peking Union Medical College, Beijing, China.
Xiaoxue FanMedical Research & Biometrics Center, Fuwai Hospital, Chinese Academy of Medical Sciences, National Center for Cardiovascular Diseases, Beijing, China.
Yuejin Yang *Coronary Heart Disease Center, Fuwai Hospital, Chinese Academy of Medical Sciences, National Center for Cardiovascular Diseases and Peking Union Medical College, Beijing, China yangyjfw@126.com.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionSmoking is a well-established risk factor for cardiovascular disease. However, the effect of smoking on in-hospital mortality in patients with acute myocardial infarction (AMI) who are managed by contemporary treatment is still unclear.

methodsA cohort study was conducted using data from the China AMI registry between 2013 and 2016. Eligible patients were diagnosed with AMI in accordance with the third universal definition of MI. Propensity score (PS) matching and multivariable logistic regression were used to control for confounders. Subgroup analysis was performed to examine whether the association between smoking and in-hospital mortality varies according to baseline characteristics.

resultsA total of 37 614 patients were included. Smokers were younger and more frequently men with fewer comorbidities than non-smokers. After PS matching and multivariable log regression analysis were performed, the difference in in-hospital mortality between current smokers versus non-smokers was reduced, but it was still significant (5.1% vs 6.1%, p=0.0045; adjusted OR 0.78, 95% CI 0.69 to 0.88, p<0.001). Among all subgroups, there was a trend towards lower in-hospital mortality in current or ex-smokers compared with non-smokers.

conclusionsSmoking is associated with lower in-hospital mortality in patients with AMI, even after multiple analyses to control for potential confounders. This 'smoker's paradox' cannot be fully explained by confounding alone. TRIAL REGISTRATION NUMBER: NCT01874691.

Indexed as

Hospital MortalityAgedChinaFemaleHumansMaleMiddle AgedMyocardial InfarctionProspective StudiesRisk FactorsSmokingSmoking Cessationacute myocardial infarctionin-hospital mortalitysmoking

Identifiers

PMID31471442
PMCPMC6720553

What OpenQuestion holds

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Registered trials

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.