ArticleThorax2003
Underdiagnosed asthma in South Australia.
Article in Thorax, 2003. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.
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Who cites it
22 citing papers in PubMed, 80 citations in OpenAlex.
- Clinical inertia in asthma.NPJ primary care respiratory medicine · 2023Review
- Key recommendations for primary care from the 2022 Global Initiative for Asthma (GINA) update.NPJ primary care respiratory medicine · 2023Review
- Economic evaluation of integrated services for non-communicable diseases and HIV: costs and client outcomes in rural Malawi.BMJ open · 2022Article
- Chronic respiratory disease in adult outpatients in three African countries: a cross-sectional study.The international journal of tuberculosis and lung disease : the official journal of the International Union against Tuberculosis and Lung Disease · 2022Article
- Risk Factors for the Absence of Diagnosis of Asthma Despite Disease Symptoms: Results from the Swedish GA2LEN Study.Journal of asthma and allergy · 2022Article
- Asthma diagnosis: into the fourth dimension.Thorax · 2021Review
- Clinical Differences between Early- and Late-Onset Asthma: A Population-Based Cross-Sectional Study.Canadian respiratory journal · 2021Article
- Article
- Epidemiology of asthma and associated factors in an urban Pakistani population: adult asthma study-Karachi.BMC pulmonary medicine · 2018Article
- [Dyspnea in airway and pulmonary diseases].Der Internist · 2015Article
- Article
- Chronic respiratory conditions in a cohort of metropolitan fire-fighters: associations with occupational exposure and quality of life.International archives of occupational and environmental health · 2014Article
- Review
- Asthma in the elderly: what we know and what we have yet to know.The World Allergy Organization journal · 2014Review
- Article
- Sex differences in the relationship between asthma and overweight in Dutch children: a survey study.PloS one · 2013Article
- Immunolocalization of NLRP3 Inflammasome in Normal Murine Airway Epithelium and Changes following Induction of Ovalbumin-Induced Airway Inflammation.Journal of allergy · 2012Article
- Associations of physical and mental health problems with chronic cough in a representative population cohort.Cough (London, England) · 2009Article
- Body mass index and asthma incidence in the Black Women's Health Study.The Journal of allergy and clinical immunology · 2009Article
- [Asthma among senior adults].Der Internist · 2008Review
Corrections and comments
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Authors and funding
7 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundThe prevalence of undiagnosed asthma in the general population and the clinical and demographic characteristics of these patients compared with those with diagnosed asthma are unclear.
methodsThe North West Adelaide Health Survey (NWAHS) is a population household interview survey of adults (age>18 years) in the north western suburbs of Adelaide, South Australia (regional population 0.6 million). Data obtained were weighted to the closest census data to provide population representative estimates. Positive answers to: "Have you ever had asthma?"; "Has it been confirmed by a doctor?"; "Do you still have asthma?" determined current physician diagnosed asthma. A positive bronchodilator response on spirometric testing according to ATS criteria without a physician's diagnosis determined undiagnosed asthma. Other measures included the SF-12 health survey questionnaire, the Selim index of severity of chronic lung disease, skin allergy tests, and demographic data.
resultsOf the 3422 individuals interviewed, 2523 (74%) agreed to participate in the clinical assessment. Of these, 292 (11.6%) had asthma, 236 (9.3%) with a doctor's diagnosis of asthma and 56 (2.3%) with undiagnosed asthma defined on spirometric criteria; thus, 19.2% of the total asthma group were undiagnosed. Those undiagnosed were more likely (p<0.05) to be >40 years old, on government benefits, with an income <AUD$40,000. Symptom frequency was similar in the two asthma groups, but mean spirometric values were lower in the undiagnosed group (p<0.05) while positive skin allergy tests were more common in the diagnosed group (p<0.05). SF-12 component summary scores were significantly lower in both asthma groups than in the non-asthma population. Undiagnosed asthma was frequent in men and in those aged >65 years. Health service use over the previous year was similar for both asthma groups.
conclusionUndiagnosed asthma is common among the Australian population, with a similar clinical spectrum to those with diagnosed asthma.
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