Evidence map›Paper›PMID 35021062›Full record

Observational studyInternational journal of infectious diseases : IJID : official publication of the International Society for Infectious Diseases2022

ASSOCIATION OF SMOKING AND SEVERITY OF COVID-19 INFECTION AMONG 5,889 PATIENTS IN MALAYSIA: A MULTI-CENTER OBSERVATIONAL STUDY.

Norliana Ismail, Noraryana Hassan, Muhammad Hairul Nizam Abd Hamid, Ummi Nadiah Yusoff, Noor Raihan Khamal, Mohd Azahadi Omar, Xin Ci Wong, Mohan Dass Pathmanathan, Shahanizan Mohd Zin, Faizah Muhammad Zin and 2 more

Abstract readMulticenter StudyObservational Study
In one paragraph

Observational study in International journal of infectious diseases : IJID : official publication of the International Society for Infectious Diseases, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing 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.

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

15 citing papers in PubMed.

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  15. Examining Male Predominance of Severe COVID-19 Outcomes: A Systematic Review.Androgens: clinical research and therapeutics · 2022
    Review
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

12 authors.

Norliana IsmailDisease Control Division, Ministry of Health, Malaysia. Electronic address: norliana.ismail@moh.gov.my.
Noraryana HassanDisease Control Division, Ministry of Health, Malaysia. Electronic address: noraryana@moh.gov.my.
Muhammad Hairul Nizam Abd HamidDisease Control Division, Ministry of Health, Malaysia.
Ummi Nadiah YusoffDisease Control Division, Ministry of Health, Malaysia.
Noor Raihan KhamalDisease Control Division, Ministry of Health, Malaysia.
Mohd Azahadi OmarNational Institute of Health, Ministry of Health, Malaysia.
Xin Ci WongDigital Health Research and Innovation Unit, Institute for Clinical Research, Malaysia.
Mohan Dass PathmanathanDigital Health Research and Innovation Unit, Institute for Clinical Research, Malaysia.
Shahanizan Mohd ZinMedical Division, Ministry of Health, Malaysia.
Faizah Muhammad ZinMedical Division, Ministry of Health, Malaysia.
Mohamad Haniki Nik MohamedKulliyyah of Pharmacy, International Islamic University of Malaysia (Chairman of Technical Working Group World Health Organization Framework Convention on Tobacco Control Malaysia).
Norashidah Mohd NorFaculty of Economy, University Putra Malaysia (Vice Chairman of Technical Working Group World Health Organization Framework Convention on Tobacco Control Malaysia).

Funding

World Health Organization 001
6 · The paper itself

Abstract

objectiveThis study aims to investigate the association between smoking and the severity of COVID-19 infection during the initial wave of this pandemic in Malaysia.

methodsThis is a multi-center observational study using secondary hospital data collected retrospectively from February 1, 2020, until May 30, 2020. Clinical records of all real-time polymerase chain reaction (RT-PCR)-confirmed COVID-19 cases with smoking status, co-morbidities, clinical features, and disease management were retrieved. Severity was assessed by the presence of complications and outcomes of COVID-19 infection. Logistic regression was used to determine the association between COVID-19 disease severity and smoking status.

resultsA total of 5,889 COVID-19 cases were included in the analysis. Ever smokers had a higher risk of having COVID-19 complications, such as acute respiratory distress syndrome (odds ratio [OR] 1.69; 95% confidence interval [CI] 1.09-2.55), renal injury (OR 1.55; 95% CI 1.10-2.14), and acute liver injury (OR 1.33; 95% CI 1.01-1.74), compared with never smokers. However, in terms of disease outcomes, there were no differences between the two groups.

conclusionAlthough no significant association was found in terms of disease outcomes, smoking is associated with a higher risk of having complications owing to COVID-19 infection.

Indexed as

COVID-19HumansMalaysiaRetrospective StudiesSARS-CoV-2SmokingcomplicationsCOVID-19disease outcomeMalaysiaseveritySmoking

Identifiers

PMID35021062
PMCPMC8743378

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.