title: 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.
abstract: This study aimed to evaluate the effectiveness of a cooperative healthcare model for early detection and diagnosis of chronic obstructive pulmonary disease (COPD).
  
  
  
  This was a cross-sectional observational study. We performed diagnosis of COPD at 4 public health centres in Ōmuta, Japan from March 2015 to March 2016, by adding screening for COPD at the time of routine medical evaluations. All patients aged over 40 years were eligible to participate. Among 397 eligible patients, 293 agreed to participate in the study.
  
  
  
  The estimated prevalence of COPD in Ōmuta was 10% among patients aged over 40 years and was 17% among smokers. Among those who were screened, over half of them had questionnaire scores over the cut-off of 17 points and decreased FEV1/FVC%, indicating COPD (p>0.05). 30 patients with suspected COPD were referred for further investigation at a local central hospital, but only 6 underwent further medical examinations.
  
  
  
  The combination of a COPD questionnaire and medical examination is 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.
authors.affiliation: Department of Physical Therapy, Faculty of Fukuoka Medical Technology, Teikyo University, Fukuoka, Japan.
authors.forename: Kenji
authors.initials: K
authors.lastname: Kotaki
authors.affiliation: Department of Physical Therapy, Faculty of Fukuoka Medical Technology, Teikyo University, Fukuoka, Japan.
authors.forename: Hisao
authors.initials: H
authors.lastname: Ikeda
authors.affiliation: Department of Physical Therapy, Faculty of Fukuoka Medical Technology, Teikyo University, Fukuoka, Japan.
authors.forename: Takeshi
authors.initials: T
authors.lastname: Fukuda
authors.affiliation: Department of Physical Therapy, Faculty of Fukuoka Medical Technology, Teikyo University, Fukuoka, Japan.
authors.forename: Fumiko
authors.initials: F
authors.lastname: Yuki
authors.affiliation: Department of Physical Therapy, Faculty of Fukuoka Medical Technology, Teikyo University, Fukuoka, Japan.
authors.forename: Kanehiro
authors.initials: K
authors.lastname: Hasuo
authors.affiliation: Department of Physical Therapy, Faculty of Fukuoka Medical Technology, Teikyo University, Fukuoka, Japan.
authors.forename: Yuhei
authors.initials: Y
authors.lastname: Kawano
authors.affiliation: Department of Physical Therapy, Faculty of Fukuoka Medical Technology, Teikyo University, Fukuoka, Japan.
authors.forename: Masayuki
authors.initials: M
authors.lastname: Kawasaki
mesh_terms: D000368:Aged; D000397:Air Pollution / Q000009:adverse effects* / Q000032:analysis; D003430:Cross-Sectional Studies; D042241:Early Diagnosis; D004781:Environmental Exposure / Q000009:adverse effects* / Q000032:analysis; D005260:Female; D006801:Humans; D007564:Japan / Q000453:epidemiology; D008297:Male; D008403:Mass Screening / Q000379:methods; D008875:Middle Aged; D015995:Prevalence; D029424:Pulmonary Disease, Chronic Obstructive / Q000453:epidemiology*; D012907:Smoking / Q000453:epidemiology; D013147:Spirometry / Q000379:methods*; D014797:Vital Capacity
keywords: COPD; PRIMARY CARE; diagnosis