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Trial registered on ANZCTR
Registration number
ACTRN12619000650190
Ethics application status
Approved
Date submitted
23/04/2019
Date registered
1/05/2019
Date last updated
13/10/2021
Date data sharing statement initially provided
1/05/2019
Date results information initially provided
13/10/2021
Type of registration
Retrospectively registered
Titles & IDs
Public title
The effect of an immediate pre-operative haemoglobin blood test on hip fracture patient outcomes: A before and after cohort study
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Scientific title
The effect of an immediate Pre-OPerative haemoglobin blood test on hip fracture patient outcomes: A before and after cohort study
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Secondary ID [1]
298030
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Nil Known
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Universal Trial Number (UTN)
U1111-1232-1081
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Trial acronym
POP test
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Linked study record
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Health condition
Health condition(s) or problem(s) studied:
hip fracture
312484
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anaemia
312485
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femur fracture
312486
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post-operative complications
312488
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Condition category
Condition code
Anaesthesiology
311029
311029
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0
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Other anaesthesiology
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Surgery
311030
311030
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0
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Other surgery
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Intervention/exposure
Study type
Interventional
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Description of intervention(s) / exposure
Currently, a pre-operative Haemoglobin (Hb) level check is only performed in patients with hip fracture on admission to the Emergency Department approximately 16-48hours before surgery. Other studies have identified that the majority of blood loss a hip fracture patient experiences happens prior to surgery. Participants will be recruited into two groups; Retrospective group and Prospective group. The retrospective group will have received care according to the hospitals hip fracture care pathway which guides only 1 pre-operative Hb level check is required to be performed on admission to the Emergency Department. The prospective group will have an additional Hb test using a point-of-care (HemoCue®) device immediately prior to surgery. The test may indicate acute fracture related pre-operative blood loss and/or diagnose anaemia. Treatment for anaemia such as; blood products, iron transfusion, oral midodrine, intravenous tranexamic acid, a change in the type of anaesthetic used or a delay in surgery may be provided to the patient at the anaesthetists discretion to prevent patient deterioration or minimise the risk of complications relating to blood loss/anaemia.
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Intervention code [1]
314260
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Diagnosis / Prognosis
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Intervention code [2]
314261
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Early detection / Screening
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Intervention code [3]
314303
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Treatment: Other
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Comparator / control treatment
The retrospective group cohort will form the comparison. A Theatre Management System (TMS) report will identify the previous 300 patients having surgery for a hip fracture in reverse chronological order from the start date of prospective recruitment. We estimate the retrospective groups admission time period will be from February 2016-April 2017 based on the amount of hip fracture patients that the hospital has previously admitted. The TMS report will also be able to filter out patients who do not meet the inclusion criteria.
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Control group
Historical
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Outcomes
Primary outcome [1]
319832
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Acute Hospital Length of Stay (LOS)
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Assessment method [1]
319832
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Timepoint [1]
319832
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LOS will be assessed by review of medical records and by utilising a patient tracking health program called webPAS (the web based Patient Administration System).
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Secondary outcome [1]
369620
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Treatment decisions made by the anaesthetist and surgeon peri-operatively; Use of blood product transfusions intra-operatively, use of TXA, use of iron transfusions, use of pre-operative or post-operative midodrine, number of serum Hb blood tests requested intra-operatively and post-operatively, type of anaesthetic used (spinal/regional vs general anaesthetic), the decision made by the Consultant to operate as the primary surgeon and the decision to delay or post-pone time of surgery. The Anaesthetic Record (medical record) and the theatre management system will be used to identify what treatments are provided to each participant.
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Assessment method [1]
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Timepoint [1]
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All treatments provided to the patient from arrival to the theatre department to departure from the post-anaesthetic care unit.
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Secondary outcome [2]
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Mortality
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Assessment method [2]
369621
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Timepoint [2]
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Mortality will be assessed at hospital discharge and at 30 days, 90 days and 1 year from the day of surgery, Mortality will be collected using the program iSoft Clinical Manager.
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Secondary outcome [3]
369623
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Whether an HDU or ICU admission is required for post-operative care
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Assessment method [3]
369623
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Timepoint [3]
369623
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The discharge location at time of departure from the post-anaesthetic care unit (PACU). This data will be collected using the Theatre Management System.
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Secondary outcome [4]
369625
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PACU LOS
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Assessment method [4]
369625
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Timepoint [4]
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The clinical time (in minutes) a participant spends in the PACU, from arrival to the time the participant meets the PACU discharge to ward criteria. Both the theatre management system records these time points and will be used to collect this data.
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Eligibility
Key inclusion criteria
• Patients with a low impact hip fracture requiring surgical intervention
• Adults aged >50years
• Patients able to consent to participate in the research study
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Minimum age
50
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
• Elective surgery
• Hip fracture surgery to repair/replace fractures of pre-existing prosthesis or metal work
• Jehovah’s Witnesses/ Patients refusing treatment for low Hb
• Complicated fractures caused by cancer, metastases or tumour of the femur
• Pregnancy
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Study design
Purpose of the study
Diagnosis
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Allocation to intervention
Non-randomised trial
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Procedure for enrolling a subject and allocating the treatment (allocation concealment procedures)
NA
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Methods used to generate the sequence in which subjects will be randomised (sequence generation)
NA
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Masking / blinding
Open (masking not used)
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Who is / are masked / blinded?
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Intervention assignment
Other
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Other design features
Only prospective participants will receive an interventional immediate pre-operative Hb test. Retrospective participants will not have received this test as it is not a part of the routine hip fracture care pathway.
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Phase
Not Applicable
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Type of endpoint/s
Efficacy
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Statistical methods / analysis
Multivariate linear regression will be used to compare the hospital LOS and PACU LOS between the three groups. Multivariate logistic regression will compare dichotomous outcomes (intra-operative and post-operative blood and iron transfusion, formal Hb requests etc.) All analyses will make adjustments for potential effect modifiers and confounders of age, gender, age*gender interaction, ASA score, patient comorbidity, ED admission Hb, use of tranexamic acid, use of pre-operative anticoagulants and antiplatelet medication, and pre-operative INR. An additional reliability test will be performed using the HemoCue® results and any formal Hb test results requested to confirm HemoCue® readings. We will test the reliability of HemoCue® machines using a Bland Altman plot analysis.
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Recruitment
Recruitment status
Stopped early
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Data analysis
Data collected is being analysed
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Reason for early stopping/withdrawal
Lack of funding/staff/facilities
Participant recruitment difficulties
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Date of first participant enrolment
Anticipated
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Actual
23/04/2018
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Date of last participant enrolment
Anticipated
23/10/2019
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Actual
19/09/2019
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Date of last data collection
Anticipated
23/10/2020
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Actual
12/03/2020
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Sample size
Target
600
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Accrual to date
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Final
150
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Recruitment in Australia
Recruitment state(s)
WA
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Recruitment hospital [1]
13648
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Sir Charles Gairdner Hospital - Nedlands
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Recruitment postcode(s) [1]
26324
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6009 - Nedlands
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Funding & Sponsors
Funding source category [1]
302558
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Other Collaborative groups
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Name [1]
302558
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The Sir Charles Gairdner Hospital and Osborne Park Hospital Research Advisory Council
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Address [1]
302558
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Sir Charles Gairdner Hospital,
Hospital Avenue
2nd Floor A Block (Mailbox 26)
Nedlands, WA, 6009
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Country [1]
302558
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Australia
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Primary sponsor type
Hospital
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Name
Sir Charles Gairdner Hospital
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Address
Sir Charles Gairdner Hospital,
Hospital Avenue
2nd Floor A Block (Mailbox 26)
Nedlands, WA, 6009
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Country
Australia
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Secondary sponsor category [1]
302465
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University
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Name [1]
302465
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Edith Cowan University
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Address [1]
302465
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270 Joondalup Dr, Joondalup WA 6027
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Country [1]
302465
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Australia
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Ethics approval
Ethics application status
Approved
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Ethics committee name [1]
303202
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Sir Charles Gairdner and Osborne Park Health Care Group HREC
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Ethics committee address [1]
303202
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Sir Charles Gairdner Hospital
Hospital Avenue, 2nd Floor A Block (Mailbox 26)
Nedlands, WA, 6009
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Ethics committee country [1]
303202
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Australia
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Date submitted for ethics approval [1]
303202
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13/11/2017
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Approval date [1]
303202
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10/04/2018
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Ethics approval number [1]
303202
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RGS0000000688
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Ethics committee name [2]
303203
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Edith Cowan University HREC
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Ethics committee address [2]
303203
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270 Joondalup Dr, Joondalup WA 6027
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Ethics committee country [2]
303203
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Australia
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Date submitted for ethics approval [2]
303203
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10/04/2018
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Approval date [2]
303203
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19/04/2019
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Ethics approval number [2]
303203
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20514
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Summary
Brief summary
In patients with hip fracture, low haemoglobin (Hb) levels are associated with post-operative complications, mortality, and increased hospital Length of Stay (LOS). A pre-operative Hb is taken on admission to the Emergency Department at Sir Charles Gairdner Hospital (SCGH). At the time of surgery, admission Hb levels may not be reliable indicators of current patient Hb status due to continual acute fracture-related blood loss, haemo-concentration and delays to surgery. This cohort study will investigate if an intervention of an Hb test immediately before surgery will improve patient outcomes. We will compare outcomes between 300 prospective patients and 300 retrospective patients. The outcome measures include hospital LOS, use of blood transfusions, Post-Anaesthetic Care Unit LOS, post-operative complications, admission to critical care areas, and survival to discharge. We foresee the results of this study may improve patient outcomes.
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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
92838
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Miss Peri Mickle
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Address
92838
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Department of Anaesthesia, SCGH
Level 1 G Block
Hospital Avenue, Nedlands, 6009
WA
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Country
92838
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Australia
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Phone
92838
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+61 8 6457 7220
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Fax
92838
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Email
92838
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[email protected]
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Contact person for public queries
Name
92839
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Miss Peri Mickle
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Address
92839
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Department of Anaesthesia, SCGH
Level 1 G Block
Hospital Avenue, Nedlands, 6009
WA
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Country
92839
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Australia
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Phone
92839
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+61 8 6457 7220
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Fax
92839
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Email
92839
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[email protected]
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Contact person for scientific queries
Name
92840
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Miss Peri Mickle
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Address
92840
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Department of Anaesthesia, SCGH
Level 1 G Block
Hospital Avenue, Nedlands, 6009
WA
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Country
92840
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Australia
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Phone
92840
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+61 8 6457 7220
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Fax
92840
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Email
92840
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[email protected]
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Data sharing statement
Will individual participant data (IPD) for this trial be available (including data dictionaries)?
No
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No/undecided IPD sharing reason/comment
protect the confidentiality and privacy of participants
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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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