Chai Jing-jing, Liu Tao, Cai Bai-qiang
Department of Respiratory Disease, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China.
Zhonghua Jie He He Hu Xi Za Zhi. 2011 Apr;34(4):256-8.
To determine the reliability and validity of the COPD assessment test (CAT) Chinese version in patients with chronic obstructive pulmonary disease (COPD), and to study its value in evaluating quality of life in Chinese patients.
One hundred and thirty-five patients with COPD in stable condition from Peking Union Medical College Hospital were assessed by interview with CAT Chinese version, and underwent pulmonary function test on the same day. The validity was documented by performing correlation analysis, and Pearson's correlation coefficients were calculated. The stages of COPD determined by CAT score and lung function were compared to observe the value of CAT in determining disease severity.
Cronbach's alpha of CAT Chinese version was 0.805. CAT score increased with the severity of the disease, and was negatively correlated to FEV(1)% of predicted (r = -0.567, P < 0.01). CAT score varied significantly in patients (10 ± 5, 16 ± 6, 21 ± 7 and 23 ± 6), with different severity of COPD (χ(2) = 48.437, P < 0.01). There was a high degree of consistency between the stages of COPD determined by CAT score and lung function.
The Chinese version of the CAT had good internal consistency reliability and validity, and can be used to assess the quality of life for Chinese COPD patients. It provided a simple, valid and standardized measurement of COPD health status.
确定慢性阻塞性肺疾病（COPD）评估测试（CAT）中文版在慢性阻塞性肺疾病患者中的信度和效度，并研究其在评估中国患者生活质量方面的价值。
对北京协和医院135例病情稳定的COPD患者采用CAT中文版进行访谈评估，并于同日进行肺功能检查。通过相关性分析记录效度，并计算Pearson相关系数。比较由CAT评分和肺功能确定的COPD分期，以观察CAT在确定疾病严重程度方面的价值。
CAT中文版的Cronbach's alpha为0.805。CAT评分随疾病严重程度增加而升高，与预测的第一秒用力呼气容积（FEV(1)）百分比呈负相关（r = -0.567，P < 0.01）。不同严重程度COPD患者的CAT评分差异显著（χ(2) = 48.437，P < 0.01），分别为（10 ± 5、16 ± 6、21 ± 7和23 ± 6）。由CAT评分和肺功能确定的COPD分期之间具有高度一致性。
CAT中文版具有良好的内部一致性信度和效度，可用于评估中国COPD患者的生活质量。它为COPD健康状况提供了一种简单、有效且标准化的测量方法。
