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Trial registered on ANZCTR
Registration number
ACTRN12618001379202
Ethics application status
Approved
Date submitted
14/08/2018
Date registered
16/08/2018
Date last updated
16/08/2018
Type of registration
Retrospectively registered
Titles & IDs
Public title
Reducing delays in aneurysmal subarachnoid haemorrhage
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Scientific title
Reducing delays in aneurysmal subarachnoid haemorrhage: a retrospective data study
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Secondary ID [1]
295512
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None
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Universal Trial Number (UTN)
U1111-1217-1142
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Trial acronym
REDDISH
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Linked study record
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Health condition
Health condition(s) or problem(s) studied:
Aneurysmal Subarachnoid Haemorrhage
308778
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Stroke
308779
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Condition category
Condition code
Stroke
307715
307715
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0
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Haemorrhagic
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Intervention/exposure
Study type
Observational
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Patient registry
False
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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
The study will audit the medical records of first-ever aneurysmal subarachnoid haemorrhage occurring within the referral networks of two tertiary hospitals between 2010 and 2016. The retrospective study design is due to the low incidence of aSAH (~9/100,000 people per year).
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Intervention code [1]
301829
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Early Detection / Screening
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Comparator / control treatment
No Control Group
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Control group
Uncontrolled
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Outcomes
Primary outcome [1]
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To quantify the time delays in the treatment of aneurysmal subarachnoid haemorrhage for patients across Tasmania and South-East Victoria. This will be assessed with an audit of admission and treatment times recorded in medical records.
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Assessment method [1]
306701
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Timepoint [1]
306701
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Retrospective data from 2010 to 2016
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Secondary outcome [1]
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Discharge destination as recorded in medical records and linked with the National Death Index: home, another hospital, nursing home, rehabilitation, death.
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Assessment method [1]
349300
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Timepoint [1]
349300
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Retrospective data 2010-2016
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Secondary outcome [2]
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Functional Independence Measure scores will be extracted from an audit of medical records both at discharge from acute hospital and discharge from rehabilitation. This data will be cross-checked with the AROC database (The Australasian Rehabilitation Outcomes Centre). This is the national rehabilitation medicine clinical registry of Australia and New Zealand
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Assessment method [2]
349301
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Timepoint [2]
349301
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Retrospective data 2010 to 2016
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Eligibility
Key inclusion criteria
We will include cases of first-ever aneurysmal subarachnoid haemorrhage occurring within the referral networks of two tertiary hospitals between 2010 and 2016.
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Minimum age
18
Years
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Maximum age
No limit
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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
1. People who have experienced a subarachnoid haemorrhage that has not occurred secondary to the rupture of an aneurysm, including individuals with arteriovenous malformations or haemorrhages secondary to infectious and traumatic events, and or extensions of ICH, where the primary cause has not been aneurysmal.
2. In Tasmania only, Individuals will also be excluded if their usual residence was not Tasmania.
3. Individuals re-presenting to hospital following for adverse events following the securement of their aneurysm, unless a second aneurysm had ruptured during the study period.
4. Aneurysm rupture occurred outside of the study period 1/1/2010 to 31/12/2016
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Study design
Purpose
Natural history
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Duration
Longitudinal
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Selection
Defined population
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Timing
Retrospective
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Statistical methods / analysis
We will calculate the mean (± standard deviation, SD) and median (interquartile range, IQR) delays in hours between the onset of symptoms and receipt of treatment with either neurosurgical clipping or endovascular coiling to secure the aneurysm. We will also calculate times from onset to: (1) call for ambulance, (2) arrival at first emergency department, (3) arrival at treating hospital (if transferred) and (4) first neuroimaging.
We will examine predictors of the delay between the onset of symptoms and treatment as a continuous outcome using linear mixed models (with transformation of delays if necessary) to account for clustering within the treating hospital. Results will be presented as mean differences in hours (± 95% CI).
We will estimate the associations with the treatment delay using Cox proportional hazards modelling (hazard of death/survival), log binomial regression (discharge destination, any vs no complications, any vs no discharge home) and ordinal models (total number of complications) with account for clustering by hospital in each analysis. We will model non-linearity using fractional polynomials, and use calculus or change-point analysis to identify cut-points for ‘early’ treatment and confirm those reported in the literature (e.g. with in 24 hours).
We will give careful consideration to the role of factors that might confound, mediate or moderate the analyses for hypotheses 2 and 3, particularly the year of aSAH (to account for any secular changes) and the severity of the aSAH using the WFNS score. The CI team, particularly CI Blizzard, has a wealth of experience in contemporary methods for dealing with missing data and the potential bias these introduce using techniques such as multiple imputation and inverse probability weighting.
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Recruitment
Recruitment status
Recruiting
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Date of first participant enrolment
Anticipated
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Actual
2/07/2018
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Date of last participant enrolment
Anticipated
28/02/2019
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Actual
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Date of last data collection
Anticipated
28/02/2019
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Actual
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Sample size
Target
1036
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Accrual to date
300
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Final
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Recruitment in Australia
Recruitment state(s)
TAS,VIC
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Recruitment hospital [1]
11411
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Royal Hobart Hospital - Hobart
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Recruitment hospital [2]
11412
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North West Regional Hospital - Burnie
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Recruitment hospital [3]
11413
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Launceston General Hospital - Launceston
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Recruitment hospital [4]
11414
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Mersey Community Hospital - Latrobe
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Recruitment hospital [5]
11415
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Monash Medical Centre - Clayton campus - Clayton
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Recruitment hospital [6]
11463
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Dandenong Hospital - Dandenong
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Recruitment hospital [7]
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Monash Medical Centre - Moorabbin campus - East Bentleigh
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Recruitment hospital [8]
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Casey Hospital - Berwick
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Recruitment postcode(s) [1]
23324
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7000 - Hobart
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Recruitment postcode(s) [2]
23325
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7320 - Burnie
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Recruitment postcode(s) [3]
23326
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7250 - Launceston
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Recruitment postcode(s) [4]
23327
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7307 - Latrobe
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Recruitment postcode(s) [5]
23328
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3168 - Clayton
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Recruitment postcode(s) [6]
23483
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3175 - Dandenong
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Recruitment postcode(s) [7]
23484
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3165 - East Bentleigh
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Recruitment postcode(s) [8]
23485
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3806 - Berwick
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Funding & Sponsors
Funding source category [1]
300097
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Government body
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Name [1]
300097
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NHMRC
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Address [1]
300097
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Research Committee Secretariat NHMRC GPO Box 1421 Canberra ACT 2601
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Country [1]
300097
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Australia
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Primary sponsor type
University
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Name
University of Tasmania
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Address
17 Liverpool St, Hobart TAS 7000
Menzies Research Institute Tasmania
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Country
Australia
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Secondary sponsor category [1]
299496
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University
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Name [1]
299496
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Monash University
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Address [1]
299496
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Scenic Blvd & Wellington Road, Clayton VIC 3800
Monash University
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Country [1]
299496
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Australia
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Other collaborator category [1]
280235
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Hospital
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Name [1]
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Monash Health
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Address [1]
280235
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246 Clayton Rd, Clayton VIC 3168
Monash Medical Centre
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Country [1]
280235
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Australia
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Other collaborator category [2]
280252
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Government body
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Name [2]
280252
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Tasmanian Health Service
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Address [2]
280252
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Department of Health and Human Services
GPO Box 125
HOBART TAS 7001
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Country [2]
280252
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Australia
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Ethics approval
Ethics application status
Approved
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Ethics committee name [1]
300941
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Tasmania Health & Medical Human Research Ethics Committee EC00337
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Ethics committee address [1]
300941
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University of Tasmania
Building 1, First Floor, 301 Sandy Bay Road
Hobart TAS 7001
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Ethics committee country [1]
300941
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Australia
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Date submitted for ethics approval [1]
300941
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01/01/2018
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Approval date [1]
300941
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03/05/2018
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Ethics approval number [1]
300941
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Ethics Ref: H0014563
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Ethics committee name [2]
300942
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Monash Health HREC
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Ethics committee address [2]
300942
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Research Support Services Monash Health Level 2, I Block Monash Medical Centre 246 Clayton Road Clayton Victoria 3168
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Ethics committee country [2]
300942
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Date submitted for ethics approval [2]
300942
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05/02/2018
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Approval date [2]
300942
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22/02/2018
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Ethics approval number [2]
300942
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Monash Health Ref: RES-18-0000-036A
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Summary
Brief summary
Aneurysmal subarachnoid haemorrhage (aSAH) is a rare but devastating form of stroke caused by a ruptured brain aneurysm that kills at least 30% of sufferers within 1 month. Up to 50% of people with aSAH will experience delays greater than 24 hours between onset of aSAH and receiving treatment. This study aims to quantify the time delays in treatment of aSAH for patients across Tasmania and South-East Victoria.
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Trial website
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Trial related presentations / publications
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Public notes
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Contacts
Principal investigator
Name
85358
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Dr Seana Gall
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Address
85358
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Menzies Institute for Medical Research, University of Tasmania
Private Bag 23, Hobart TAS 7000
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Country
85358
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Australia
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Phone
85358
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+61 3 6226 4728
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Fax
85358
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Email
85358
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[email protected]
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Contact person for public queries
Name
85359
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Ms Gemma Kitsos
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Address
85359
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Menzies Institute for Medical Research, University of Tasmania
Private Bag 23, Hobart TAS 7000
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Country
85359
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Australia
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Phone
85359
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+61 431 016 587
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Fax
85359
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Email
85359
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[email protected]
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Contact person for scientific queries
Name
85360
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Dr Seana Gall
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Address
85360
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Menzies Institute for Medical Research, University of Tasmania
Private Bag 23, Hobart TAS 7000
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Country
85360
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Australia
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Phone
85360
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+61 3 6226 4728
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Fax
85360
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Email
85360
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[email protected]
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No information has been provided regarding IPD availability
What supporting documents are/will be available?
No Supporting Document Provided
Current supporting documents:
Updated to:
Doc. No.
Type
Citation
Link
Email
Other Details
Attachment
23664
Study protocol
[email protected]
Results publications and other study-related documents
Documents added manually
Current Study Results
No documents have been uploaded by study researchers.
Update to Study Results
Doc. No.
Type
Is Peer Reviewed?
DOI
Citations or Other Details
Attachment
4090
Plain language summary
No
Data collection is complete but results are not ye...
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Documents added automatically
No additional documents have been identified.
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