{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,24]],"date-time":"2026-10-24T03:10:00Z","timestamp":1792811400862,"version":"4.5.0"},"reference-count":21,"publisher":"BMJ","issue":"2","license":[{"start":{"date-parts":[[2025,3,12]],"date-time":"2025-03-12T00:00:00Z","timestamp":1741737600000},"content-version":"unspecified","delay-in-days":39,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"funder":[{"name":"Telemark Hospital","award":["NA"],"award-info":[{"award-number":["NA"]}]}],"content-domain":{"domain":["bmj.com"],"crossmark-restriction":true},"short-container-title":["Occup Environ Med"],"accepted":{"date-parts":[[2025,3,3]]},"published-print":{"date-parts":[[2025,2]]},"abstract":"<jats:sec>\n                    <jats:title>Objectives<\/jats:title>\n                    <jats:p>We aimed to estimate the prevalence of chronic bronchitis (CB), examine its association with occupational exposure to irritants assessed by self-reporting or the Nordic job exposure matrix (N-JEM) stratified by smoking status and estimate the population-attributable fraction (PAF) of CB from occupational exposure.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>A two-phased, cross-sectional design was used to analyse a random sample collected in 2013 and 2018 of the population aged 16\u201355 years in Telemark County, Norway. CB was defined as cough and sputum production for \u22653 months over 2 consecutive years. The participants\u2019 occupational histories were categorised using the International Standard Classification of Occupations and linked to the N-JEM. Self-reported occupational exposure was also assessed. Logistic regression was performed with adjustments for age, sex and smoking status and yielded ORs, 95% CIs and associated PAFs.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>Of the 20\u2009282 participants, 5.3% reported CB symptoms. CB was associated with the frequency of self-reported occupational exposure to vapours, gas, dust and fumes (VGDF), with increasing ORs ranging from 1.6 (95% CI 1.3 to 1.9) for seldom to 3.6 (95% CI 2.9 to 4.5) for daily exposure. Among ever-smokers, the N-JEM \u2018irritants\u2019 category was associated with CB (OR 1.4; 95%\u2009CI 1.1 to 1.8) to a similar degree as in the group that reported VGDF exposure (OR 2.1; 95%\u2009CI 1.7 to 2.5). The PAFs for CB from VGDF exposure were 41% overall, 49% among ever-smokers and 37% among never-smokers.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>Occupational exposure to VGDF was associated with CB, when self-reported and for smokers when assessed by the N-JEM. Workplace exposure contributed to more than one third of the overall CB burden.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1136\/oemed-2024-109641","type":"journal-article","created":{"date-parts":[[2025,3,13]],"date-time":"2025-03-13T12:53:31Z","timestamp":1741870411000},"page":"98-104","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":4,"title":["Occupational exposure and chronic bronchitis in a sample of the general population in Telemark, Norway: a two-phased cross-sectional study"],"prefix":"10.1136","volume":"82","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-1160-8380","authenticated-orcid":false,"given":"Anne Kristin M\u00f8ller","family":"Fell","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chi","family":"Zhang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Geir","family":"Klepaker","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Regine","family":"Abrahamsen","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7954-7599","authenticated-orcid":false,"given":"Nikola","family":"Zivadinovic","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Johny","family":"Kongerud","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Martin Veel","family":"Svendsen","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8509-7603","authenticated-orcid":false,"given":"Kjell","family":"Tor\u00e9n","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9043-175X","authenticated-orcid":false,"given":"Paul","family":"Blanc","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"239","published-online":{"date-parts":[[2025,3,12]]},"reference":[{"key":"2025041602200578000_82.2.98.1","doi-asserted-by":"publisher","DOI":"10.1513\/AnnalsATS.201411-518OC"},{"key":"2025041602200578000_82.2.98.2","doi-asserted-by":"crossref","DOI":"10.1183\/13993003.00621-2017","article-title":"Prevalence and burden of chronic bronchitis symptoms: results from the BOLD study","volume":"50","author":"Mejza","year":"2017","journal-title":"Eur Respir J"},{"key":"2025041602200578000_82.2.98.3","unstructured":"Global Initiative for Chronic Obstructive Lung Disease (GOLD) . Global strategy for the diagnosis, management, and prevention of chronic obstructive pulmonary disease,2018. 2019."},{"key":"2025041602200578000_82.2.98.4","doi-asserted-by":"publisher","DOI":"10.1378\/chest.14-2240"},{"key":"2025041602200578000_82.2.98.5","doi-asserted-by":"publisher","DOI":"10.1136\/thx.2008.110619"},{"key":"2025041602200578000_82.2.98.6","first-page":"251","article-title":"Occupation in chronic obstructive pulmonary disease and chronic bronchitis: an update","volume":"11","author":"Blanc","year":"2007","journal-title":"Int J Tuberc Lung Dis"},{"key":"2025041602200578000_82.2.98.7","doi-asserted-by":"publisher","DOI":"10.1136\/oemed-2018-105274"},{"key":"2025041602200578000_82.2.98.8","doi-asserted-by":"publisher","DOI":"10.1007\/s00420-020-01634-2"},{"key":"2025041602200578000_82.2.98.9","doi-asserted-by":"publisher","DOI":"10.1136\/thoraxjnl-2020-216721"},{"key":"2025041602200578000_82.2.98.10","doi-asserted-by":"publisher","DOI":"10.21037\/jtd-23-646"},{"key":"2025041602200578000_82.2.98.11","first-page":"1312","article-title":"The Occupational Burden of Nonmalignant Respiratory Diseases","volume":"199","author":"Blanc","year":"2019","journal-title":"An Official American Thoracic Society and European Respiratory Society Statement Am J Respir Crit Care Med"},{"key":"2025041602200578000_82.2.98.12","doi-asserted-by":"publisher","DOI":"10.1097\/MCP.0000000000000135"},{"key":"2025041602200578000_82.2.98.13","doi-asserted-by":"crossref","unstructured":"Abrahamsen R , Svendsen MV , Henneberger PK , et al . Non-response in a population-based study of respiratory health in Norway. BMJ Open 2016.:e009912. doi:10.1136\/bmjopen-2015-009912","DOI":"10.1136\/bmjopen-2015-009912"},{"key":"2025041602200578000_82.2.98.14","doi-asserted-by":"publisher","DOI":"10.1016\/j.rmed.2011.06.003"},{"key":"2025041602200578000_82.2.98.15","unstructured":"ILO . International Standard classification of occupations ISCO 88. Geneva, Switzerland: ILO, 1991."},{"key":"2025041602200578000_82.2.98.16","doi-asserted-by":"publisher","DOI":"10.1093\/annhyg\/mes083"},{"key":"2025041602200578000_82.2.98.17","doi-asserted-by":"publisher","DOI":"10.1093\/annhyg\/meu002"},{"key":"2025041602200578000_82.2.98.18","doi-asserted-by":"publisher","DOI":"10.1080\/19338244.2021.1957755"},{"key":"2025041602200578000_82.2.98.19","doi-asserted-by":"publisher","DOI":"10.1080\/17476348.2016.1190274"},{"key":"2025041602200578000_82.2.98.20","doi-asserted-by":"publisher","DOI":"10.3109\/15412555.2013.813448"},{"key":"2025041602200578000_82.2.98.21","doi-asserted-by":"publisher","DOI":"10.1164\/ajrccm.163.7.2004195"}],"container-title":["Occupational and Environmental Medicine"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/syndication.highwire.org\/content\/doi\/10.1136\/oemed-2024-109641","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,4,16]],"date-time":"2025-04-16T05:20:18Z","timestamp":1744780818000},"score":1,"resource":{"primary":{"URL":"https:\/\/oem.bmj.com\/lookup\/doi\/10.1136\/oemed-2024-109641"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2025,2]]},"references-count":21,"journal-issue":{"issue":"2","published-online":{"date-parts":[[2025,4,16]]},"published-print":{"date-parts":[[2025,2]]}},"alternative-id":["10.1136\/oemed-2024-109641"],"URL":"https:\/\/doi.org\/10.1136\/oemed-2024-109641","relation":{},"ISSN":["1351-0711","1470-7926"],"issn-type":[{"value":"1351-0711","type":"print"},{"value":"1470-7926","type":"electronic"}],"subject":[],"published":{"date-parts":[[2025,2]]}}}