A prospective cohort study of asthma and COPD overlap in Japanese patients with COPD according to the diagnostic criteria of The Japanese Respiratory Society
- Conditions
- COPD
- Registration Number
- JPRN-UMIN000032891
- Lead Sponsor
- AstraZeneca.KK.
- Brief Summary
Not available
- Detailed Description
Not available
Recruitment & Eligibility
- Status
- Complete: follow-up complete
- Sex
- All
- Target Recruitment
- 700
Not provided
1)Patients who participated in an intervention study such as a clinical trial within the last 8 weeks 2)Patients who is not appropriate for joining this study, judged by the investigators, due to the reasons such as they cannot comply with the procedures, restrictions and requirements of this study 3)Patients who experienced exacerbation of COPD or asthma within the last 8 weeks 4)Patients who have following diseases which cannot be distinguished from COPD or asthma at the time of obtaining consent: Diffuse panoramic bronchitis, congenital sinus bronchial syndrome, obstructive panbronchitis, bronchiectasis, pulmonary tuberculosis, pneumoconiosis, lymphangiomyomatosis, interstitial lung disease, lung cancer, vocal fold dysfunction, intratracheal tumor, tracheal softening, bronchial tuberculosis, pulmonary thromboembolism, congestive heart failure
Study & Design
- Study Type
- Observational
- Study Design
- Not specified
- Primary Outcome Measures
Name Time Method Proportion of patients fulfilling the diagnostic criteria for ACO at the time of registration, 1 year later, and 2 years later
- Secondary Outcome Measures
Name Time Method