[Analysis on awareness of chronic obstructive pulmonary disease (COPD) status and related knowledge in patients with COPD in China, 2014-2015].

Objective: To understand the awareness of chronic obstructive pulmonary disease (COPD) status and awareness of COPD-related knowledge and its influencing factors in COPD patients aged ≥40 years in China in 2014-2015. Methods: The study subjects were selected through multi-stage stratified cluster sampling from 125 COPD surveillance points in 31 provinces (autonomous regions, municipalities) in China. The number of the subjects was 75 107. The relevant variables about COPD diagnosis and COPD-related knowledge awareness were collected by electronic questionnaire in face to face interviews. A total of 9 134 participates with post-bronchodilator FEV(1)/FVC<70% were diagnosed with COPD. Based on the complex sampling design, the awareness rate of COPD status and related knowledge were estimated, and the influencing factors were analyzed. Results: A total of 9 132 COPD patients were included in the analysis. Among COPD patients aged ≥40 years in China, 0.9% were aware of their COPD status (95%CI: 0.6%-1.1%), and 5.7% were aware of COPD related knowledge (95%CI: 4.8%-6.6%), and 3.4% were aware of pulmonary function test (95%CI: 2.8%-4.0%). The COPD status awareness rate was 3.9% in the patients with history of chronic respiratory disease (95%CI: 2.9%-4.8%), 2.4% in the patients with respiratory symptoms (95%CI: 1.7%-3.1%), and 7.1% in the patients with COPD related knowledge awareness (95%CI: 4.5%-9.8%) respectively. The results of multivariate logistic regression analysis showed that chronic respiratory disease history, respiratory symptoms, occupational dust and/or harmful gas exposure and COPD related knowledge awareness had influences on the awareness rate of COPD status. Educational level and chronic respiratory disease history had influences on the awareness rate of COPD related knowledge. And ethnic groups, educational level and history of chronic respiratory diseases had influences on the awareness rate of pulmonary function test. Conclusions: The awareness rates of COPD status, COPD-related knowledge and pulmonary function test in COPD patients in China were low. The comprehensive intervention of COPD should be carried out to improve the level of diagnosis and the awareness COPD status of COPD patients.目的： 了解2014－2015年我国≥40岁慢性阻塞性肺疾病（慢阻肺）患者的患病相关知识知晓情况及其影响因素。 方法： 采用2014－2015年中国居民慢性阻塞性肺疾病监测数据，共调查75 107人。利用电子问卷采取面对面询问方式收集有关慢阻肺患病知晓及相关知识知晓等信息，通过肺功能检查舒张试验后FEV(1)/FVC<70%诊断慢阻肺患者共9 134名，基于复杂抽样设计估计我国≥40岁慢阻肺患者的患病知晓和相关知识知晓率并分析其影响因素。 结果： 9 132名慢阻肺患者纳入分析。≥40岁慢阻肺患者的患病知晓率为0.9%（95%CI：0.6%～1.1%），慢阻肺相关知识知晓率为5.7%（95%CI：4.8%～6.6%），肺功能检查知晓率为3.4%（95%CI：2.8%～4.0%）。有慢性呼吸系统疾病史、有呼吸道症状和知晓慢阻肺相关知识的患者，其慢阻肺患病知晓率分别为3.9%（95%CI：2.9%～4.8%）、2.4%（95%CI：1.7%～3.1%）和7.1%（95%CI：4.5%～9.8%）。多因素logistic回归分析显示，慢性呼吸系统疾病史、呼吸道症状、职业粉尘和/或有害气体暴露以及慢阻肺相关知识知晓情况影响慢阻肺患者的患病知晓率。文化程度和慢性呼吸系统疾病史影响患者慢阻肺相关知识知晓率；民族、文化程度、慢性呼吸系统疾病史影响慢阻肺患者的肺功能检查知晓率。 结论： 我国≥40岁慢阻肺患者人群的患病知晓率、肺功能检查知晓率以及慢阻肺知识知晓率均较低，应采取综合的慢阻肺管理与干预措施，不断提高慢阻肺患者的诊断水平及患病知晓水平。.