Methods A questionnaire investigation was made to 330 cases with COPD and physical examination,lab examination and pulmonary function examination were given; and a retrospective analysis was made to 81 dead cases.

• 方法采用问卷调查、体格检查、实验室检查及肺功能检查相结合的方法,对定居成都市军队干休所师以上、70岁以上离休干部以往确诊为COPD、目前仍存活的330例患者进行群体调查,对已经死亡的81例进行回顾性分析。