Data from: Effectiveness of diagnostic screening tests in mass screening for COPD using a cooperative regional system in a region with heavy air pollution: a cross-sectional study

Objective: This research aimed to evaluate the effectiveness of a cooperative health care model for early detection and diagnosis of chronic obstructive pulmonary disease (COPD), in Omuta Japan. Methods: This was a cross-sectional observational study. We performed diagnosis of COPD at four public health centres in Omuta, Japan from March 2015 to March 2016, by adding screening for COPD at the time of routine medical evaluations. All patients over 50 years were eligible to participate. Of a total of 397 eligible patients, 293 agreed to take part in the study. Results: The estimated prevalence of COPD in Omuta was 10% among subjects over 40 years and was 17% among smokers. Out of those who were screened, over half had questionnaire scores over the cut-off of 17 points and decreased FEV1/FVC%, indicating COPD (p>0.05). Thirty subjects with suspected COPD were given a referral for further investigation at a local central hospital, but only six underwent further medical examinations. Conclusion: The combination of COPD questionnaire and medical exam was effective as a COPD screening tool. Future research should investigate behavioural interventions for smoking cessation that can be offered in a cooperative model, as well as for improving participation in COPD screening and for encouraging early presentation for treatment in those suspected of having COPD.本研究旨在评估日本大牟田市针对慢性阻塞性肺疾病（Chronic Obstructive Pulmonary Disease, COPD）的早诊早治协作医疗模式的有效性。 本研究为横断面观察性研究。2015年3月至2016年3月期间，研究团队在日本大牟田市的4家公共卫生中心，将COPD筛查纳入常规医学评估流程以开展COPD诊断工作。所有50岁以上的受试者均符合入组条件。总计397名符合入组标准的受试者中，293名同意参与本研究。 本次研究估算得出，大牟田市40岁以上人群COPD患病率为10%，吸烟者COPD患病率为17%。在接受筛查的受试者中，超过半数的问卷得分高于17分的截断值，且第一秒用力呼气容积/用力肺活量百分比（FEV1/FVC%）降低，提示存在COPD（p>0.05）。共计30名疑似COPD患者被转诊至当地中心医院接受进一步检查，但仅有6名患者完成了后续诊疗。 COPD问卷联合医学检查作为COPD筛查工具具有有效性。未来的研究应探索可依托协作模式开展的戒烟行为干预方案，同时优化COPD筛查的参与度，并鼓励疑似COPD患者尽早就诊接受治疗。