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Male sex, younger age and smoking contribute to low participating rate in an epidemiological study of asthma and respiratory symptoms
Umeå University, Faculty of Medicine, Department of Public Health and Clinical Medicine, Occupational and Environmental Medicine. (OLIN Unit)
Umeå University, Faculty of Medicine, Department of Public Health and Clinical Medicine, Occupational and Environmental Medicine. (OLIN Unit)ORCID iD: 0000-0002-0553-8067
Umeå University, Faculty of Medicine, Department of Public Health and Clinical Medicine, Occupational and Environmental Medicine. (OLIN Unit)
Umeå University, Faculty of Medicine, Department of Public Health and Clinical Medicine, Occupational and Environmental Medicine. (OLIN Unit)ORCID iD: 0000-0002-1630-3167
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2018 (English)In: European Respiratory Journal, ISSN 0903-1936, E-ISSN 1399-3003, Vol. 52Article in journal, Meeting abstract (Other academic) Published
Abstract [en]

Background: High participation rate is warranted in order to ensure the validity in epidemiological study results. However, participation rates in population based studies have declined during the last decades.

Aim: To evaluate the causes and potential effects of non-response in a large population based survey about asthma and respiratory symptoms in Northern Sweden.

Methods: In 2016 a random sample of 12000 adults in ages 20-79 were invited to a postal questionnaire survey about asthma, rhinitis and respiratory symptoms. Three reminders were sent out. A random sample of 500 non-responders was identified for a telephone interview.

Results: The participation rate in the initial mailing was 40.6%, and 9.0%, 4.9%, and 2.6% in the subsequent reminders; in total 57.1% (n=6854) participated. Of the 500 non-responders, 320 were possible to reach and 272 participated in the interviews. The prevalence of respiratory symptoms did not differ significantly between responders and non-responders. Male sex, younger age, and smoking were associated with both late and non-response. Even if more subjects with asthma or allergic rhinitis were late and non-responders the prevalence estimates of these conditions were not substantially affected. However, 11.7% of participants and 18.0% of non-responders were smokers (p <0.001). Reasons for non-participation were mainly lack of time and having forgotten to answer.

Conclusion: With a response rate of 57.1%, our prevalence estimates of asthma and respiratory symptom were not biased while smoking was underestimated in this Swedish population.

Place, publisher, year, edition, pages
European Respiratory Society , 2018. Vol. 52
National Category
Respiratory Medicine and Allergy
Identifiers
URN: urn:nbn:se:umu:diva-155990DOI: 10.1183/13993003.congress-2018.PA1159ISI: 000455567101228OAI: oai:DiVA.org:umu-155990DiVA, id: diva2:1286603
Conference
28th International Congress of the European-Respiratory-Society (ERS), SEP 15-19, 2018, Paris, FRANCE
Note

Supplement: 62

Meeting Abstract: PA1159

Available from: 2019-02-07 Created: 2019-02-07 Last updated: 2019-02-07Bibliographically approved

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Räisänen, PetriBackman, HelenaJansson, Sven-ArneHedman, LinneaLindberg, AnneRönmark, Eva

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