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Restrictive spirometric pattern in the general adult population: methods of defining the condition and consequences on prevalence
Umeå University, Faculty of Medicine, Department of Public Health and Clinical Medicine, Occupational and Environmental Medicine. (The OLIN Unit)
Umeå University, Faculty of Medicine, Department of Public Health and Clinical Medicine, Occupational and Environmental Medicine. Department of Health Sciences, Division of Nursing, Luleå University of Technology, Luleå, Sweden. (The OLIN Unit ; Arcum)
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2016 (English)In: Respiratory Medicine, ISSN 0954-6111, E-ISSN 1532-3064, Vol. 120, 116-123 p.Article in journal (Refereed) Published
Abstract [en]

BACKGROUND: Attempts have been made to use dynamic spirometry to define restrictive lung function, but the definition of a restrictive spirometric pattern (RSP) varies between studies such as BOLD and NHANES. The aim of this study was to estimate the prevalence and risk factors of RSP among adults in northern Sweden based on different definitions.

METHODS: In 2008-2009 a general population sample aged 21-86y within the obstructive lung disease in northern Sweden (OLIN) studies was examined by structured interview and spirometry, and 726 subjects participated (71% of invited). The prevalence of RSP was calculated according to three different definitions based on pre-as well as post-bronchodilator spirometry: 1) FVC < 80% & FEV1/FVC > 0.7 2) FVC < 80% & FEV1/FVC > LLN 3) FVC < LLN & FEV1/FVC > LLN RESULTS: The three definitions yielded RSP prevalence estimates of 10.5%, 11.2% and 9.4% respectively, when based on pre-bronchodilator values. The prevalence was lower when based on post-bronchodilator values, i.e. 7.3%, 7.9% and 6.6%. According to definition 1 and 2, the RSP prevalence increased by age, but not according to definition 3. The overlap between the definitions was substantial. When corrected for confounding factors, manual work in industry and diabetes with obesity were independently associated with an increased risk for RSP regardless of definition.

CONCLUSIONS: The prevalence of RSP was 7-11%. The prevalence estimates differed more depending on the choice of pre- compared to post-bronchodilator values than on the choice of RSP definition. RSP was, regardless of definition, independently associated with manual work in industry and diabetes with obesity.

Place, publisher, year, edition, pages
Elsevier, 2016. Vol. 120, 116-123 p.
Keyword [en]
Restriction, Spirometry, Prevalence, Risk factor, General population
National Category
Environmental Health and Occupational Health
Identifiers
URN: urn:nbn:se:umu:diva-128111DOI: 10.1016/j.rmed.2016.10.005ISI: 000388116100016PubMedID: 27817808OAI: oai:DiVA.org:umu-128111DiVA: diva2:1049077
Available from: 2016-11-23 Created: 2016-11-23 Last updated: 2017-05-09Bibliographically approved

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CiteExportLink to record
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