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High Prevalence of Asthma in Elderly Women: Findings From a Korean National Health Database and Adult Asthma Cohort
Allergy, Asthma & Immunology Research ; : 387-396, 2018.
Article in English | WPRIM | ID: wpr-716004
ABSTRACT

PURPOSE:

The prevalence and burden of asthma is increasing worldwide. In this study, we analyzed 3 different Korean national health survey datasets to determine the general features of adult asthma in Korea and to obtain basic information that would support future strategies for better management of adult asthma.

METHODS:

The surveys used in this study included the Korea National Health and Nutrition Examination Survey (KNHANES), Korea Community Health Survey (KCHS) and National Health Insurance Service-National Sample Cohort (NHIS-NSC). We investigated annual asthma prevalence, evaluating the rate and risk factors of asthma exacerbation by age and sex, and clinical data of 1,832 patients with asthma who were registered in the Cohort for Reality and Evolution of Adult Asthma in Korea (COREA) were analyzed to elucidate risk factors for asthma exacerbation. We also analyzed another asthma cohort and added it as replication data.

RESULTS:

In the KNHANES database, annual asthma prevalence rates varied from 1.2% to 3.1%. In the KCHS database, overall prevalence increased, with significant regional differences (1.6%–2.1%). The NHIS-NSC indicated a gradual increase in annual asthma prevalence from 4.5% to 6.2%. Interestingly, all 3 surveys indicated the highest prevalence of asthma among elderly women. In addition, elderly women with asthma had a significantly higher risk of asthma exacerbation (odds ratio [OR], 1.87; 95% confidence interval [CI], 1.19–2.93; P=0.006). Approximately 11% of patients were classified as having severe asthma. An asthma cohort analysis identified female sex, low baseline pulmonary function, longer treatment duration, high variability in pulmonary function and significant changes in Asthma Control Test scores as risk factors for asthma exacerbation.

CONCLUSIONS:

The prevalence of asthma in Korea is consistently high among elderly and female populations. These results should lay the foundation for strategies for effective asthma prevention and management; elderly female patients with asthma should receive particular attention.
Subject(s)

Full text: Available Index: WPRIM (Western Pacific) Main subject: Asthma / Nutrition Surveys / Incidence / Prevalence / Risk Factors / Cohort Studies / Health Surveys / Dataset / Korea / National Health Programs Type of study: Diagnostic study / Etiology study / Incidence study / Observational study / Prevalence study / Prognostic study / Risk factors Limits: Adult / Aged / Female / Humans Country/Region as subject: Asia Language: English Journal: Allergy, Asthma & Immunology Research Year: 2018 Type: Article

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Full text: Available Index: WPRIM (Western Pacific) Main subject: Asthma / Nutrition Surveys / Incidence / Prevalence / Risk Factors / Cohort Studies / Health Surveys / Dataset / Korea / National Health Programs Type of study: Diagnostic study / Etiology study / Incidence study / Observational study / Prevalence study / Prognostic study / Risk factors Limits: Adult / Aged / Female / Humans Country/Region as subject: Asia Language: English Journal: Allergy, Asthma & Immunology Research Year: 2018 Type: Article