Chronic bronchitis in West Sweden: a matter of smoking and social classShow others and affiliations
2016 (English)In: European Clinical Respiratory Journal, ISSN 2001-8525, Vol. 3, article id 30319Article in journal (Refereed)
Abstract [en]
Background: Although chronic bronchitis is associated with impaired quality of life, hospitalisations and
increased mortality, it has been less in focus after the introduction of the term chronic obstructive pulmonary
disease (COPD). There are no recent published data on the prevalence of chronic bronchitis from the
Scandinavian countries.
Aim: The main aim of the present study was to estimate the prevalence of chronic bronchitis in West Sweden
by using data from a large-scale epidemiological study of the general population. A further aim was to
identify current risk factors for chronic bronchitis in a population with a major decrease in the proportion of
smokers.
Methods: From the 18,087 questionnaire responders out of 30,000 invited to participate at the West Sweden
Asthma Study, 2,000 subjects were randomly selected and invited to detailed clinical examinations performed
during 2009 2013. A total of 1,172 subjects aged 17 79 participated in the examinations which included,
among others, spirometry and structured interviews. Chronic bronchitis was defined according to reported
symptoms.
Results: The overall prevalence of chronic bronchitis was 7.2% (men 7.6%; women 6.8% ns), and it was
8.7% in subjects older than age 60. Chronic bronchitis was strongly associated with smoking, defined both as
current smoking status and pack-years. Other risk factors were increasing age, low socio-economic class and
urban living. Of those with chronic bronchitis, 22% fulfilled the GOLD criteria of COPD.
Conclusion: The prevalence of chronic bronchitis was somewhat lower than found by studies in Sweden in the
1980s and the prevalence was now similar in men and women. Although smoking was still the dominating
risk factor for chronic bronchitis, the relative importance of smoking had decreased parallel with a decreasing
smoking prevalence, while the relative importance of other factors than smoking had increased compared to
previous studies.
Place, publisher, year, edition, pages
Co-Action , 2016. Vol. 3, article id 30319
Keywords [en]
chronic bronchitis, epidemiology, population study, respiratory tract disease, risk factors
National Category
Medical and Health Sciences
Identifiers
URN: urn:nbn:se:mau:diva-14634DOI: 10.3402/ecrj.v3.30319ISI: 000381816000001PubMedID: 27421832Local ID: 21186OAI: oai:DiVA.org:mau-14634DiVA, id: diva2:1418155
2020-03-302020-03-302024-06-17Bibliographically approved