Research on the status of chronic obstructive pulmonary disease (COPD) in An Thi district and Hung Yen city, the results showed that: There were 3.5 percent people in the communities have chronic obstructive pulmonary disease
incidence in men (6.3 percent) higher than women (1.2 percent)
the older people are, the more increasing incidence of the disease, the highest incidence is in the age group or = 70 years old (12.4 percent)
number of cigarettes people smoked, duration of exposure in kitchen has proportional morbidity.