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.

研究目标：本研究旨在评估协作式医疗模式在日本大牟田市（Omuta）开展慢性阻塞性肺疾病（chronic obstructive pulmonary disease, COPD）早期筛查与诊断中的应用效果。
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，我们在日本大牟田市的4家公共卫生中心，将慢性阻塞性肺疾病筛查纳入常规体检流程，以此完成受试者的慢性阻塞性肺疾病诊断筛查。所有年龄≥50岁的受试者均符合入组标准。共计招募符合入组标准的受试者397名，其中293名同意参与本研究。
研究结果：本研究估算得出，大牟田市40岁以上人群中慢性阻塞性肺疾病的患病率为10%，吸烟者中的患病率为17%。在参与筛查的受试者中，超过半数的问卷得分高于17分的截断值，且存在第一秒用力呼气容积占用力肺活量百分比（FEV1/FVC%）下降的情况，符合慢性阻塞性肺疾病的筛查指征（p>0.05）。共计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，但仅有6名受试者完成了后续医学检查。
研究结论：将慢性阻塞性肺疾病问卷与医学检查相结合，可作为有效的慢性阻塞性肺疾病筛查工具。未来研究可针对协作医疗模式下的戒烟行为干预、提升慢性阻塞性肺疾病筛查参与率，以及鼓励疑似患者尽早就诊接受治疗等方向展开探索。