Abstract
WSAS is a clinical epidemiological study, based on a random population of 30000 individuals living in West Sweden. After having answered a questionnaires, a random population was invited to extensive clinical phenotyping. We here report lung function FENO data from 954 asthmatics and 1030 non-asthmatics. Asthma was defined as “doctors diagnosis of asthma” and “ever asthma” + “current asthma medication or symptoms common in asthma”. According to GINA criteria, 57.6% of asthmatics had controlled asthma, 29.3% partly controlled asthma and, 13.1% uncontrolled asthma. Weekly night-time asthma awakenings was reported by 12.6% of asthmatics. The prevalence of emergency visits over the last year due to asthma was 13.9% in non-smokers, 17.1% in ex-smokers, and 31.6 in current smokers (p=0.006 for trend). Mean %pred FEV1 was 105.3% in non-asthma and 96.9 in asthma. In the non-asthma group, 29.4% of individuals had FEV1 50 ppb) was observed in 3% of the non-asthma group and 9.6% of the asthma group. Asthma with significant severity, leading to emergency visits, is common in the WSAS, and previous or current smoking increase that risk. Furthermore, close to every other individual with asthma report uncontrolled or partly controlled disease. Despite significant disease severity in this epidemiological setting, very few asthmatics express low lung function or very high exhaled FENO. Neither FEV1, nor FENO may be appropriate markers of disease severity in an epidemiological setting. However, WSAS may be utilized to further explore determinants of asthma severity and their risk factors, which will be reported at the meeting. This work was financed by the VBG Foundation against asthma/allergy.
Highlights
West Sweden Asthma Study (WSAS) is a clinical epidemiological study, based on a random population of 30000 individuals living in West Sweden
After having answered a questionnaires, a random population was invited to extensive clinical phenotyping
Night-time asthma awakenings was reported by 12.6% of asthmatics
Summary
WSAS is a clinical epidemiological study, based on a random population of 30000 individuals living in West Sweden. Emergency visits, lung function and FENO in asthma and non-asthma in the West Sweden Asthma Study (WSAS) Jan Lötvall*, Anders Bjerg, Linda Ekerljung, Bo Lundback From EAACI International Severe Asthma Forum (ISAF 2012) Gothenburg, Sweden. After having answered a questionnaires, a random population was invited to extensive clinical phenotyping.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.