Incidence of asthma in adults – report from the Obstructive Lung Disease in Northern Sweden Study
Incidence studies offer a better opportunity to study risk factors for asthma than do prevalence studies. However, regular prospective follow‐ups of large cohorts are difficult to perform, and that is why direct measurement of the incidence rate of asthma is almost impossible. Thus, cross‐sectional...
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crwiley:10.1111/j.1398-9995.1997.tb00178.x 2024-09-15T18:26:13+00:00 Incidence of asthma in adults – report from the Obstructive Lung Disease in Northern Sweden Study Rönmark, E. Lundbäck, B. Jonsson, E. Jonsson, A.‐C. Lindström, M. Sandström, T. 1997 http://dx.doi.org/10.1111/j.1398-9995.1997.tb00178.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1398-9995.1997.tb00178.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1398-9995.1997.tb00178.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Allergy volume 52, issue 11, page 1071-1078 ISSN 0105-4538 1398-9995 journal-article 1997 crwiley https://doi.org/10.1111/j.1398-9995.1997.tb00178.x 2024-09-05T05:10:43Z Incidence studies offer a better opportunity to study risk factors for asthma than do prevalence studies. However, regular prospective follow‐ups of large cohorts are difficult to perform, and that is why direct measurement of the incidence rate of asthma is almost impossible. Thus, cross‐sectional follow‐up studies of defined cohorts can be used to provide data on incidence. In 1986, a postal questionnaire survey on respiratory symptoms and diseases was performed in the northernmost province of Sweden. The population sample comprised all subjects born in 1919—20, 1934—5, and 1949—50 in eight representative areas of the province, which comprises 25% of the total area of Sweden. Completed answers were given by 5698 subjects (86%) of the 6610 subjects invited to the study. In 1992, the cohort was invited to a follow‐up survey during the same season as in 1986, and 6215 subjects were traced. Of the 5393 subjects who answered the questionnaire, 4932 had participated in the 1986 survey, or 87% of those who participated in 1986. For the period 1986—92, the cumulative incidences of asthma were 4.9 and 5.0%, respectively, as assessed by the questions, “Have you ever had asthma?” and “Have you been diagnosed as having asthma by a physician?” Thus, the results indicate a mean annual cumulative incidence of asthma of 0.8%. After correction of the results for subjects who were diagnosed as having asthma in the clinical part later in the 1986 study, the mean annual cumulative incidence of asthma was found to be 0.5%. Risk factors were family history of asthma (OR 3.46) and current and former smoking, while female sex was a strong trend. Article in Journal/Newspaper Northern Sweden Wiley Online Library Allergy 52 11 1071 1078 |
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Incidence studies offer a better opportunity to study risk factors for asthma than do prevalence studies. However, regular prospective follow‐ups of large cohorts are difficult to perform, and that is why direct measurement of the incidence rate of asthma is almost impossible. Thus, cross‐sectional follow‐up studies of defined cohorts can be used to provide data on incidence. In 1986, a postal questionnaire survey on respiratory symptoms and diseases was performed in the northernmost province of Sweden. The population sample comprised all subjects born in 1919—20, 1934—5, and 1949—50 in eight representative areas of the province, which comprises 25% of the total area of Sweden. Completed answers were given by 5698 subjects (86%) of the 6610 subjects invited to the study. In 1992, the cohort was invited to a follow‐up survey during the same season as in 1986, and 6215 subjects were traced. Of the 5393 subjects who answered the questionnaire, 4932 had participated in the 1986 survey, or 87% of those who participated in 1986. For the period 1986—92, the cumulative incidences of asthma were 4.9 and 5.0%, respectively, as assessed by the questions, “Have you ever had asthma?” and “Have you been diagnosed as having asthma by a physician?” Thus, the results indicate a mean annual cumulative incidence of asthma of 0.8%. After correction of the results for subjects who were diagnosed as having asthma in the clinical part later in the 1986 study, the mean annual cumulative incidence of asthma was found to be 0.5%. Risk factors were family history of asthma (OR 3.46) and current and former smoking, while female sex was a strong trend. |
format |
Article in Journal/Newspaper |
author |
Rönmark, E. Lundbäck, B. Jonsson, E. Jonsson, A.‐C. Lindström, M. Sandström, T. |
spellingShingle |
Rönmark, E. Lundbäck, B. Jonsson, E. Jonsson, A.‐C. Lindström, M. Sandström, T. Incidence of asthma in adults – report from the Obstructive Lung Disease in Northern Sweden Study |
author_facet |
Rönmark, E. Lundbäck, B. Jonsson, E. Jonsson, A.‐C. Lindström, M. Sandström, T. |
author_sort |
Rönmark, E. |
title |
Incidence of asthma in adults – report from the Obstructive Lung Disease in Northern Sweden Study |
title_short |
Incidence of asthma in adults – report from the Obstructive Lung Disease in Northern Sweden Study |
title_full |
Incidence of asthma in adults – report from the Obstructive Lung Disease in Northern Sweden Study |
title_fullStr |
Incidence of asthma in adults – report from the Obstructive Lung Disease in Northern Sweden Study |
title_full_unstemmed |
Incidence of asthma in adults – report from the Obstructive Lung Disease in Northern Sweden Study |
title_sort |
incidence of asthma in adults – report from the obstructive lung disease in northern sweden study |
publisher |
Wiley |
publishDate |
1997 |
url |
http://dx.doi.org/10.1111/j.1398-9995.1997.tb00178.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1398-9995.1997.tb00178.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1398-9995.1997.tb00178.x |
genre |
Northern Sweden |
genre_facet |
Northern Sweden |
op_source |
Allergy volume 52, issue 11, page 1071-1078 ISSN 0105-4538 1398-9995 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1398-9995.1997.tb00178.x |
container_title |
Allergy |
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52 |
container_issue |
11 |
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1071 |
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1078 |
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