Prevalence of asthma with airflow limitation, COPD, and COPD with variable airflow limitation in older subjects in a general Japanese population: The Hisayama Study

Abstract Background Elucidating the prevalence of asthma and chronic obstructive pulmonary disease (COPD) is important for designing a public health strategy. Recent studies have discriminated a phenotype of COPD with variable airflow limitation (COPD-VAL) associated with asthma–COPD overlap syndrom...

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Bibliographic Details
Published in:Respiratory investigation 2015-01, Vol.53 (1), p.22-29
Main Authors: Matsumoto, Koichiro, Seki, Nanae, Fukuyama, Satoru, Moriwaki, Atsushi, Kan-o, Keiko, Matsunaga, Yuko, Noda, Naotaka, Yoshida, Makoto, Koto, Hiroshi, Takata, Shohei, Nakanishi, Yoichi, Kiyohara, Yutaka, Inoue, Hiromasa
Format: Article
Language:English
Subjects:
Adult
Age Factors
Aged
Aged, 80 and over
Asian Continental Ancestry Group
Asthma
Asthma - complications
Asthma - epidemiology
Asthma - physiopathology
Chronic obstructive pulmonary disease
Female
Forced Expiratory Volume
Hisayama Study
Humans
Internal Medicine
Japan - epidemiology
Male
Middle Aged
Overlap syndrome
Prevalence
Pulmonary Disease, Chronic Obstructive - complications
Pulmonary Disease, Chronic Obstructive - epidemiology
Pulmonary Disease, Chronic Obstructive - physiopathology
Pulmonary Ventilation
Pulmonary/Respiratory
Sex Factors
Smoking - adverse effects
Smoking - epidemiology
Spirometry
Vital Capacity
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Summary:Abstract Background Elucidating the prevalence of asthma and chronic obstructive pulmonary disease (COPD) is important for designing a public health strategy. Recent studies have discriminated a phenotype of COPD with variable airflow limitation (COPD-VAL) associated with asthma–COPD overlap syndrome. Its prevalence remains uncertain. The age and occupational distributions in the town of Hisayama and in Japan are nearly identical. Each disease׳s prevalence was estimated for the town׳s residents. Methods In 2008, town residents (≥40 years) were solicited to participate in a health checkup. Individuals with abnormal spirometry (forced expiratory volume in 1 s/forced vital capacity [FEV1 /FVC]
ISSN:2212-5345
2212-5353
DOI:10.1016/j.resinv.2014.08.002