Risk factors of new-onset asthma in adults: a population-based international cohort study
Risk factors of new-onset asthma in adults: a population-based international cohort study
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DOI:
10.1111/j.1398-9995.2009.02301.x
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发表时间:
2010-08-01
期刊:
影响因子:
12.4
通讯作者:
Burney, P.
中科院分区:
文献类型:
--
作者:
Anto, J. M.;Sunyer, J.;Burney, P.
P>Background:The occurrence of new-onset asthma during adulthood is common, but there is insufficient understanding of its determinants including the role of atopy.Objective:To assess the risk factors for the development of new-onset asthma in middle-aged adults and to compare them according to atopy.Methods:A longitudinal analysis of 9175 young adults who participated in two surveys of the European Community Respiratory Health Survey (ECRHS) conducted 9 years apart.Findings:We observed 179 cases of new-onset asthma among 4588 participants who were free of asthma and reported at the beginning of the follow-up that they had never had asthma (4.5 per 1000 person-years). In a logistic regression, the following risk factors were found to increase the risk of new-onset asthma: female gender (OR: 1.97; 95% confidence interval (CI): 1.38,2.81), bronchial hyperresponsiveness (3.25; 2.19,4.83), atopy (1.55;1.08,2.21), FEV1 < 100 % predicted (1.87;1.34,2.62), nasal allergy (1.98;1.39,2.84) and maternal asthma (1.91;1.13;3.21). Obesity, respiratory infections in early life and high-risk occupations increased the risk of new-onset asthma although we had limited power to confirm their role. Among the atopics, total IgE and sensitization to cat were independently related to the risk of new-onset asthma. The proportion of new-onset asthma attributable to atopy varied from 12% to 21%.Conclusion:Adults reporting that they had never had asthma were at a substantial risk of new-onset asthma as a result of multiple independent risk factors including lung function. Atopy explains a small proportion of new-onset adult asthma.