An observational study in Chronic Obstructive Pulmonary Disease, sponsored by Thammasat University. Completed at 1 site in Thailand. Open to participants aged 40 Years and older. Per ClinicalTrials.gov, last updated 2026-02-02.
Sponsored by Thammasat University · Observational
The goal of this observational study is to investigate the accuracy of Accuhaler tester, Ellipta tester and Turbutester in patients with chronic obstructive pulmonary disease (COPD). The main question it aims to answer is:
This study is a cross-sectional study. COPD patients aged 40 years or older will be included. Peak inspiratory flow rate (PIFR) will be assessed using In-check DIAL as the standard tool. PIFR will be tested in each patient using Accuhaler tester, Ellipta tester and Turbutester.
4,131 studies on the registry are indexed under Pulmonary Disease, Chronic Obstructive; 697 are open to participants now.
This study's enrollment of 82 is below the median of 180 across 1,066 observational studies indexed under Pulmonary Disease, Chronic Obstructive.
Browse Pulmonary Disease, Chronic Obstructive studies →Thammasat University is the lead sponsor of 83 studies on the registry; 16 are open to participants now.
Counted across the registry records on this site, refreshed daily.
COPD patients aged 40 years or older who are confirmed diagnosis by spirometry (post-bronchodilator FEV1/FVC \<0.7) and smoking history 10 pack-years or more.
Exclusion Criteria:
Patients will perform testing with Accuhaler tester, Ellipta tester and Turbutester.
Also known as: Ellipta tester, Turbutester
Accuracy of Accuhaler tester
Percentage
Time frame: At day 1 of the study
Accuracy of Ellipta tester
Percentage
Time frame: At day 1 of the study
Accuracy of Turbutester
Percentage
Time frame: At day 1 of the study
Prevalence of suboptimal peak inspiratory flow rate
Percentage
Time frame: At day 1 of the study
Prevalence of insufficient peak inspiratory flow rate
Percentage
Time frame: At day 1 of the study
Plan to share: Yes — IPD and documents will be available for sharing immediately after publication for a period of 2 years.
Supporting information: Study protocol, Sap, Csr
No publications or documents are linked to this record.
This study is completed, as verified in Jan 2026. You cannot join it, but the record below documents what was studied.
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Pulmonary Disease, Chronic Obstructive→
Thammasat University