The investigation on the COPD morbility in communities of Shenyang.

Objective To investigate the COPD epidemiologic characteristics and risk factors in urban communities of Shenyang and to provide the scientific basis for the COPD prevention and management in communities.Methods Using the method of random disproportional cluster sampling,several questionnaire and lung function tests were performed to all the individuals over 40 years old in three communities in Dongling district of Shenyang.Results 1957 cases of which has complete personal information and well-done lung function test results.Among them,725 cases were male,1232 cases were female.The average ages were(59.37±11.61)years old.The COPD mobility was 8.02%,male patients(11.59%)were higher than the female(5.93%)(P0.01).The COPD mobility of patients aged from 60～80 was 77.70%,which was significantly higher than other age group(P0.01).The percentage of stage Ⅱ patients was 48.41%,which was significantly higher than other stages in severity(P0.01).The percentage of patients with cough,sputum and/or dyspnea was only 31.85%.The odd ratio(OR)for COPD in smokers was 6.39.The percentage of smoking in COPD patients was 56.05%,which was significantly higher than normals(9.61%)(P0.01).The COPD mobility of patients over 40 years old was significantly higher than that of asthma(1.58%)and/or COPD combined with asthma(1.74%).97.45% patients received lung function examination for the first time and 93.63% patients were first diagnosed as COPD.Conclusion The COPD mobility of individuals over 40 years old was significantly higher than that of asthma and COPD combined with asthma.Individuals from 60 to 80 years old were with higher prevalence.Most individuals were in stageⅠand Ⅱ.The occurrence of COPD was mainly related to smoking.The missed diagnosing rate of COPD was relatively high.The wide used lung function test was the key of the early diagnosis of COPD.