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Age- and gender-specific incidence of new asthma diagnosis from childhood to late adulthood

Artikel i vetenskaplig tidskrift
Författare J. Honkamaki
H. Hisinger-Molkanen
P. Ilmarinen
P. Piirila
L. E. Tuomisto
H. Andersen
H. Huhtala
A. Sovijarvi
H. Backman
Bo Lundbäck
E. Ronmark
L. Lehtimaki
H. Kankaanranta
Publicerad i Respiratory Medicine
Volym 154
Sidor 56-62
ISSN 0954-6111
Publiceringsår 2019
Publicerad vid Krefting Research Centre
Sidor 56-62
Språk en
Länkar dx.doi.org/10.1016/j.rmed.2019.06.0...
Ämnesord Asthma, Incidence, Prevalence, Gender, Adult, Phenotype, obstructive lung-disease, onset asthma, respiratory symptoms, northern, sweden, reported asthma, natural-history, prevalence, remission, smoking, health, Cardiovascular System & Cardiology, Respiratory System
Ämneskategorier Lungmedicin och allergi

Sammanfattning

Background: Asthma is currently divided into different phenotypes, with age at onset as a relevant differentiating factor. In addition, asthma with onset in adulthood seems to have a poorer prognosis, but studies investigating age-specific incidence of asthma with a wide age span are scarce. Objective: To evaluate incidence of asthma diagnosis at different ages and differences between child- and adult-diagnosed asthma in a large population-based study, with gender-specific analyzes included. Methods: In 2016, a respiratory questionnaire was sent to 8000 randomly selected subjects aged 20-69 years in western Finland. After two reminders, 4173 (52.3%) subjects responded. Incidence rate of asthma was retrospectively estimated based on the reported age of asthma onset. Adult-diagnosed asthma was defined as a physician-diagnosis of asthma made at >= 18 years of age. Results: Among those with physician-diagnosed asthma, altogether, 63.7% of subjects, 58.4% of men and 67.8% of women, reported adult-diagnosed asthma. Incidence of asthma diagnosis was calculated in 10-year age groups and it peaked in young boys (0-9 years) and middle-aged women (40-49 years) and the average incidence rate during the examined period between 1946 and 2015 was 2.2/1000/year. Adult-diagnosed asthma became the dominant phenotype among those with physician-diagnosed asthma by age of 50 years and 38 years in men and women, respectively. Conclusions: Asthma is mainly diagnosed during adulthood and the incidence of asthma diagnosis peaks in middle-aged women. Asthma diagnosed in adulthood should be considered more in clinical practice and management guidelines.

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