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Trial registered on ANZCTR
Registration number
ACTRN12606000414516
Ethics application status
Approved
Date submitted
5/09/2006
Date registered
21/09/2006
Date last updated
14/12/2018
Date data sharing statement initially provided
14/12/2018
Type of registration
Retrospectively registered
Titles & IDs
Public title
Airway disease in older people
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Scientific title
Does ventilation heterogeneity predict airway hyperresponsiveness in asthmatic and COPD patients aged over 50 years?
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Universal Trial Number (UTN)
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Trial acronym
06AsCOPD
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Linked study record
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Health condition
Health condition(s) or problem(s) studied:
Asthma in older people
1382
0
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Chronic Obstructive Pulmonary Disease (COPD) in older people
1383
0
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Condition category
Condition code
Respiratory
1474
1474
0
0
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Asthma
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Respiratory
1475
1475
0
0
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Chronic obstructive pulmonary disease
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Intervention/exposure
Study type
Observational
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Patient registry
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Target follow-up duration
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Target follow-up type
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Description of intervention(s) / exposure
Ventilation heterogeneity and airway hyperresponsiveness are both observed on the same day in the one study visit (duration 2 hours) in asthmatic and COPD patients.
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Intervention code [1]
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None
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Comparator / control treatment
No comparator.
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Control group
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Outcomes
Primary outcome [1]
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Conducting airway ventilation heterogeneity are assessed on each patient
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Assessment method [1]
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Timepoint [1]
2042
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Ventilation heterogeneity is measured at the start of the visit
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Primary outcome [2]
2043
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Dose response ratio to methacholine challenge test assessed on each patient
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Assessment method [2]
2043
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Timepoint [2]
2043
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The methacholine challenge test is conducted immediately after the ventilation heterogeneity is measured
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Secondary outcome [1]
3527
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NIL
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Assessment method [1]
3527
0
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Timepoint [1]
3527
0
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Eligibility
Key inclusion criteria
For asthmatic subjects: Inclusion criteria are doctor diagnosis of asthma, and FEV1 ³ 50% predicted.
For COPD subjects: Inclusion criteria are doctor diagnosis of COPD, 15 pack year smoking history, FEV1 ³ 50% predicted.
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Minimum age
50
Years
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Maximum age
Not stated
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Sex
Both males and females
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Can healthy volunteers participate?
No
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Key exclusion criteria
Asthmatic exclusion criteria: are current smoking, or > 10 pack year history of smoking, respiratory infection or prednisone use in the last 4 weeks.
COPD exclusion criteria are current smoking and respiratory infection in the last 4 weeks.
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Study design
Purpose
Natural history
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Duration
Cross-sectional
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Selection
Defined population
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Timing
Prospective
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Statistical methods / analysis
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Recruitment
Recruitment status
Completed
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Date of first participant enrolment
Anticipated
1/04/2006
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Actual
1/04/2006
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Date of last participant enrolment
Anticipated
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Actual
1/04/2007
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Date of last data collection
Anticipated
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Actual
1/04/2007
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Sample size
Target
45
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Accrual to date
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Final
45
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Recruitment in Australia
Recruitment state(s)
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Funding & Sponsors
Funding source category [1]
1614
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Charities/Societies/Foundations
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Name [1]
1614
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Asthma Foundation of New South Wales
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Address [1]
1614
0
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Country [1]
1614
0
Australia
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Primary sponsor type
Other
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Name
Woolcock Institute of Medical Research
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Address
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Country
Australia
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Secondary sponsor category [1]
1416
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None
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Name [1]
1416
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NIL
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Address [1]
1416
0
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Country [1]
1416
0
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Ethics approval
Ethics application status
Approved
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Ethics committee name [1]
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Woolcock Institute of Medical Research, Royal Prince Alfred Hospital
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Ethics committee address [1]
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Level 3 Building 92Royal Prince Alfred Hospital. Camperdown. NSW. 2050
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Ethics committee country [1]
3062
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Australia
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Date submitted for ethics approval [1]
3062
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Approval date [1]
3062
0
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Ethics approval number [1]
3062
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X06-0046
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Ethics committee name [2]
3063
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Department of Respiratory Medicine-Royal North Shore Hospital
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Ethics committee address [2]
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Level 8, Royal North Shore HospitalSt Leonards. NSW. 2065
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Ethics committee country [2]
3063
0
Australia
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Date submitted for ethics approval [2]
3063
0
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Approval date [2]
3063
0
02/02/2006
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Ethics approval number [2]
3063
0
0512-232M (SP)
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Summary
Brief summary
Airway hyperresponsiveness (AHR) is an important feature of asthma, but its cause is unknown. Recently, we discovered that uneven distribution of air within the lungs is a strong predictor of AHR. We hypothesise that structural changes in the airways cause this uneven distribution and make the airways prone to AHR. Older people with asthma, particularly those with permanently narrowed airways, have more structural changes in their airways, whereas people with chronic obstructive pulmonary disease (COPD) have a different pattern of structural changes from that in asthma. Evidence that there is a consistent relationship between AHR and uneven ventilation in these populations would support our hypothesis
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Trial website
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Trial related presentations / publications
Unknown
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Public notes
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Contacts
Principal investigator
Name
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Address
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Country
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Phone
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Fax
27951
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Email
27951
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Contact person for public queries
Name
10533
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Sarah Newton-John
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Address
10533
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PO Box M77
Missenden Rd
Camperdown NSW 2050
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Country
10533
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Australia
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Phone
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+61 2 95156578
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Fax
10533
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+61 2 95505865
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Email
10533
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[email protected]
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Contact person for scientific queries
Name
1461
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Ms Sue Downie
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Address
1461
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PO Box M77
Missenden Rd
Camperdown NSW 2050
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Country
1461
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Australia
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Phone
1461
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+61 2 95157524
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Fax
1461
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+61 2 95506115
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Email
1461
0
[email protected]
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Data sharing statement
Will individual participant data (IPD) for this trial be available (including data dictionaries)?
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No/undecided IPD sharing reason/comment
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What supporting documents are/will be available?
No Supporting Document Provided
Results publications and other study-related documents
Documents added manually
No documents have been uploaded by study researchers.
Documents added automatically
No additional documents have been identified.
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