A prospective study of asthma incidence and its predictors: the RHINE study
Open Access
- 1 December 2004
- journal article
- research article
- Published by European Respiratory Society (ERS) in European Respiratory Journal
- Vol. 24 (6), 942-946
- https://doi.org/10.1183/09031936.04.00044804
Abstract
The objective of this longitudinal study was to estimate the incidence rate of asthma, and to compare the incidence between subjects with or without baseline reporting of certain respiratory symptoms. A follow-up of the random population samples in the European Respiratory Health Survey (ECRHS) in Sweden, Norway, Denmark, Iceland and Estonia was conducted in 1999–2001, in a population aged 30–54 yrs at follow-up (n=14,731). Asthma was defined as reporting either asthma or physician-diagnosed asthma, and a reported year when asthma symptoms were first noticed. Incidence rates, incidence rate ratios and hazard ratios were calculated with 95% confidence intervals. The incidence rate of asthma was 2.2 cases per 1,000 person-yrs. The incidence was higher among females (2.9 cases·1,000 person-yrs−1) than among males (1.5 cases·1,000 person-yrs−1). When subjects with baseline reporting of wheezing were excluded, the incidence rate decreased to 1.7 cases·1,000 person-yrs−1, with a further decrease to 1.5 cases·1,000 person-yrs−1 after exclusion of subjects with wheezing, nocturnal dyspnoea, chest tightness and cough. There was a strong association between onset of asthma and wheezing at baseline. In this prospective, population-based study, the incidence rate of asthma in the whole population sample ranged 1.5–2.2·1,000 person-yrs−1, with a higher incidence range among females. The incidence was dependent on the extent to which subjects with respiratory symptoms were excluded from follow-up. Hence, for comparability between studies, the exclusion criteria in the follow-up population must be stated.Keywords
This publication has 17 references indexed in Scilit:
- Occupational Airborne Exposure and the Incidence of Respiratory Symptoms and AsthmaAmerican Journal of Respiratory and Critical Care Medicine, 2002
- Incidence and remission of asthma: A retrospective study on the natural history of asthma in ItalyJournal of Allergy and Clinical Immunology, 2002
- Rhinitis increase the risk for adult-onset asthma—a Swedish population-based case-control study (MAP-study)Respiratory Medicine, 2002
- Incidence of Asthma and Its Determinants among Adults in SpainAmerican Journal of Respiratory and Critical Care Medicine, 2001
- The European Community Respiratory Health Survey: what are the main results so far?European Respiratory Journal, 2001
- Work Is Related to a Substantial Portion of Adult-onset Asthma Incidence in the Finnish PopulationAmerican Journal of Respiratory and Critical Care Medicine, 2001
- Defining asthma in epidemiological studiesEuropean Respiratory Journal, 1999
- Incidence of asthma in adults – report from the Obstructive Lung Disease in Northern Sweden StudyAllergy, 1997
- Cigarette Smoking and Incidence of Chronic Bronchitis and Asthma in WomenChest, 1995
- Asthma and Asthma-like Symptoms in Adults Assessed by QuestionnairesChest, 1993