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Trial registered on ANZCTR
Registration number
ACTRN12605000233628
Ethics application status
Approved
Date submitted
24/08/2005
Date registered
26/08/2005
Date last updated
21/09/2011
Type of registration
Retrospectively registered
Titles & IDs
Public title
The effects of Tea Tree oil on acne
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Scientific title
The effects of Tea Tree oil on acne
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Universal Trial Number (UTN)
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Trial acronym
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Linked study record
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Health condition
Health condition(s) or problem(s) studied:
Acne vulgaris lesions
319
0
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Condition category
Condition code
Skin
364
364
0
0
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Dermatological conditions
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Intervention/exposure
Study type
Interventional
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Description of intervention(s) / exposure
Tea tree oil formulation
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Intervention code [1]
242
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Treatment: Other
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Comparator / control treatment
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Control group
Placebo
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Outcomes
Primary outcome [1]
424
0
Decrease in the number of pustules and other lesions
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Assessment method [1]
424
0
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Timepoint [1]
424
0
Measured daily by photography and interpreted at the end of the study.
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Secondary outcome [1]
915
0
Subject perception of changes in acne
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Assessment method [1]
915
0
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Timepoint [1]
915
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Measured daily
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Eligibility
Key inclusion criteria
Good general health aged
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Minimum age
14
Years
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Maximum age
18
Years
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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
No exclusion criteria
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Study design
Purpose of the study
Treatment
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Allocation to intervention
Randomised controlled trial
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Procedure for enrolling a subject and allocating the treatment (allocation concealment procedures)
Each subject provided their own internal control. The right and left sides of the subjects' faces were randomly assigned to treatments, with one side of the face treated with the preparation and the other side 'treated' with a placebo. Each participant had a specific number and the treatments were supplied by the sponsor in numbered tubes.
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Methods used to generate the sequence in which subjects will be randomised (sequence generation)
Participants were assigned to a number on a first come, first entered basis. (i.e. the first recruited person was recorded as number 1)
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Masking / blinding
Blinded (masking used)
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Who is / are masked / blinded?
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Intervention assignment
Parallel
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Other design features
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Phase
Phase 3
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Type of endpoint/s
Safety/efficacy
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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
1/11/1999
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Actual
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Date of last participant enrolment
Anticipated
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Actual
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Date of last data collection
Anticipated
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Actual
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Sample size
Target
18
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Accrual to date
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Final
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Recruitment in Australia
Recruitment state(s)
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Funding & Sponsors
Funding source category [1]
423
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Commercial sector/Industry
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Name [1]
423
0
Attori Pty Ltd
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Address [1]
423
0
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Country [1]
423
0
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Primary sponsor type
Commercial sector/Industry
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Name
Attori Pty Ltd
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Address
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Country
Australia
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Secondary sponsor category [1]
342
0
None
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Name [1]
342
0
None
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Address [1]
342
0
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Country [1]
342
0
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Ethics approval
Ethics application status
Approved
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Ethics committee name [1]
1395
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Southern Cross University Human Research Ethics Committee
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Ethics committee address [1]
1395
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Ethics committee country [1]
1395
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Australia
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Date submitted for ethics approval [1]
1395
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Approval date [1]
1395
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Ethics approval number [1]
1395
0
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Summary
Brief summary
Potential subjects attended a screening clinic where they were assessed by the principal investigators. Those included were photographed (full face and left and right profile) and the film and frame numbers recorded in the subjectÿ¢ÿ¿ÿ¿s records. The study nurse, who was blinded throughout the study by the wearing of a rhino clip, then applied the active and placebo treatments to opposite sides of the face and forehead. Fresh gloves were worn during the application of each separate treatment. In subsequent clinics a study nurse washed and dried the subjectÿ¢ÿ¿ÿ¿s face with a mild dermatological soap and recorded subjective opinions of perceived changes in acne. Four photographs were taken of each subjectÿ¢ÿ¿ÿ¿s face representing the upper and lower parts of each of the treated and placebo sides. Active and placebo treatments were applied as described above. Subjects were photographed using a Minolta Dynax 600si camera with a Sigma 105mL macro lens, multi-directional studio flash lighting with soft boxes and Fuji Reala film. This film was used because it has high acutance and extended tunnel range. Colour was standardised against 18% grey card to ensure reproducibility. The camera was fixed to a tripod and the position marked on the floor to maintain consistency in future photography. Subjects were collected and returned to their homes by a University car to maximise compliance.
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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
35734
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Address
35734
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Country
35734
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Phone
35734
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Fax
35734
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Email
35734
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Contact person for public queries
Name
9431
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Professor Stephen Myers
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Address
9431
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Australian Centre for Complementary Medicine Education and Research (ACCMER)
PO Box 157
Lismore NSW 2480
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Country
9431
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Australia
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Phone
9431
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+61 2 66203403
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Fax
9431
0
+61 2 66203307
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Email
9431
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[email protected]
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Contact person for scientific queries
Name
359
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Joan O'Connor
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Address
359
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Australian Centre for Complementary Medicine Education and Research (ACCMER)
PO Box 157
Lismore NSW 2480
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Country
359
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Australia
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Phone
359
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+61 2 66203649
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Fax
359
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+61 2 66203307
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Email
359
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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
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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