Airflow obstruction (FEV1/FVC < 0.7) was detected in 8.8% of subjects aged 19 years (11.6% of men and 5.9% of women) and COPD was detected in 13.4% of subjects aged 40 years (19.4% of men and 7.9% of women).
Airflow obstruction (FEV1/FVC < 0.7) wasdetected in 8.8% of subjects aged 19 years (11.6% ofmen and 5.9% of women) and COPD was detected in13.4% of subjects aged 40 years (19.4% of men and7.9% of women).