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.

研究目的：本研究旨在评估日本大牟田市应用协作医疗模式对慢性阻塞性肺疾病（chronic obstructive pulmonary disease, COPD）进行早期检测与诊断的有效性。
研究方法：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，于常规体检基础上增加慢性阻塞性肺疾病筛查项目，以此开展慢性阻塞性肺疾病诊断工作。所有50岁以上的受试者均可参与本研究。在共计397名符合入组条件的受试者中，共有293名同意参与本次研究。
研究结果：本次研究估算得出，大牟田市40岁以上人群中慢性阻塞性肺疾病患病率为10%，吸烟者中患病率为17%。在接受筛查的受试者中，超过半数的问卷得分高于17分的临界值，且存在第一秒用力呼气容积/用力肺活量（FEV1/FVC%）降低的情况，提示慢性阻塞性肺疾病（p>0.05）。共有30名疑似慢性阻塞性肺疾病的受试者被转诊至当地中心医院接受进一步检查，但最终仅6人完成了后续医学检查。
研究结论：慢性阻塞性肺疾病问卷与医学检查相结合的方式，可作为有效的慢性阻塞性肺疾病筛查工具。未来研究应探索可应用于协作医疗模式下的戒烟行为干预方案，同时应着力提升慢性阻塞性肺疾病筛查的参与率，并鼓励疑似慢性阻塞性肺疾病患者尽早就诊接受治疗。