{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,29]],"date-time":"2026-09-29T15:59:31Z","timestamp":1790697571954,"version":"4.1.0"},"reference-count":45,"publisher":"BMJ","issue":"6","license":[{"start":{"date-parts":[[2022,6,14]],"date-time":"2022-06-14T00:00:00Z","timestamp":1655164800000},"content-version":"unspecified","delay-in-days":13,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Ministry of Science and IC","award":["2020R1C1C1012562"],"award-info":[{"award-number":["2020R1C1C1012562"]}]}],"content-domain":{"domain":["bmj.com"],"crossmark-restriction":true},"short-container-title":["BMJ Open"],"published-print":{"date-parts":[[2022,6]]},"abstract":"<jats:sec><jats:title>Objectives<\/jats:title><jats:p>Although the global COVID-19 pandemic has increased interest in research involving high-risk smokers, studies examining changed smoking behaviours, cessation intentions and associated psychological states among smokers are still scarce. This study aimed to systematically review the literature related to this subject.<\/jats:p><\/jats:sec><jats:sec><jats:title>Design<\/jats:title><jats:p>A systematic review of published articles on cigarettes and <jats:italic>COVID-19<\/jats:italic>-related topics<\/jats:p><\/jats:sec><jats:sec><jats:title>Data sources<\/jats:title><jats:p>Our search was conducted in January 2021. We used the keywords COVID-19, cigarettes, electronic cigarettes (e-cigarettes) and psychological factors in PubMed and ScienceDirect and found papers published between January and December 2020.<\/jats:p><\/jats:sec><jats:sec><jats:title>Data selection<\/jats:title><jats:p>We included articles in full text, written in English, and that surveyed adults. The topics included smoking behaviour, smoking cessation, psychological state of smokers and COVID-19-related topics.<\/jats:p><\/jats:sec><jats:sec><jats:title>Data extraction and synthesis<\/jats:title><jats:p>Papers of low quality, based on quality assessment, were excluded. Thirteen papers were related to smoking behaviour, nine papers were related to smoking cessation and four papers were related to psychological states of smokers.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Owing to the COVID-19 lockdown, cigarette users were habituated to purchasing large quantities of cigarettes in advance. Additionally, cigarette-only users increased their attempts and willingness to quit smoking, compared with e-cigarette-only users.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>Owing to the COVID-19 outbreak, the intention to quit smoking was different among smokers, according to cigarette type (cigarette-only users, e-cigarette-only users and dual users). With the ongoing COVID-19 pandemic, policies and campaigns to increase smoking cessation intentions and attempts to quit smoking among smokers at high risk of COVID-19 should be implemented. Additionally, e-cigarette-only users with poor health-seeking behaviour require interventions to increase the intention to quit smoking.<\/jats:p><\/jats:sec>","DOI":"10.1136\/bmjopen-2021-055179","type":"journal-article","created":{"date-parts":[[2022,6,14]],"date-time":"2022-06-14T15:42:28Z","timestamp":1655221348000},"page":"e055179","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":16,"title":["Systematic review of changed smoking behaviour, smoking cessation and psychological states of smokers according to cigarette type during the COVID-19 pandemic"],"prefix":"10.1136","volume":"12","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-2567-2845","authenticated-orcid":false,"given":"Hae-ryoung","family":"Chun","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Eunsil","family":"Cheon","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5094-6107","authenticated-orcid":false,"given":"Ji-eun","family":"Hwang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"239","published-online":{"date-parts":[[2022,6,14]]},"reference":[{"key":"2022061408401758000_12.6.e055179.1","doi-asserted-by":"publisher","DOI":"10.1093\/ntr\/ntaa059"},{"key":"2022061408401758000_12.6.e055179.2","unstructured":"Organization WH . 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