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Trial details imported from ClinicalTrials.gov
For full trial details, please see the original record at
https://clinicaltrials.gov/study/NCT02971709
Registration number
NCT02971709
Ethics application status
Date submitted
21/11/2016
Date registered
23/11/2016
Date last updated
25/07/2017
Titles & IDs
Public title
Use of Shade in U.S. and Australian City Parks
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Scientific title
Norms and Built Environment: Use of Shade in U.S. and Australian City Parks
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Secondary ID [1]
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0265
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Secondary ID [2]
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CA140367
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Universal Trial Number (UTN)
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Trial acronym
Shade
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Linked study record
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Health condition
Health condition(s) or problem(s) studied:
Skin Cancer
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Condition category
Condition code
Cancer
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Malignant melanoma
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Cancer
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Non melanoma skin cancer
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Intervention/exposure
Study type
Interventional
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Description of intervention(s) / exposure
BEHAVIORAL - Shade Sail
Experimental: Shade Sail - Shade sails were constructed over passive recreation areas in public parks between pretest and posttest. Shade sails maximized available shade in the passive recreation areas from 11 am to 3 pm in the summer.
No intervention: Unshaded Control - Passive recreation areas in public parks that remained unshaded at pretest and posttest.
BEHAVIORAL: Shade Sail
Shade sails had powder-coated or gout galvanized steel poles and a lighter colored shade cloth to transmit visual light. The shade cloth met Ultraviolet Protection Factor (UPF) ratings to reduce UV under the shade cloth by 94%. The final shade sail designs and sizes were determined with input from parks department staff and complied with all local engineering, building, and planning codes. Shade sails exceeded the minimum safety requirements for strength (for wind and snow load), resistance to light degradation, and UV transmission. The design minimized climbing access points and hazards to adjacent activities.
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Intervention code [1]
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BEHAVIORAL
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Comparator / control treatment
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Control group
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Outcomes
Primary outcome [1]
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Observed Use of Passive Recreation Area by Adults
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Assessment method [1]
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Any use of each passive recreation, assessed by observing each passive recreation areas for 30 minutes on four weekend days between 11 am and 3 pm when forecast high temperatures were had forecast high temperature were between 72°F/22°C and 95°F/35°C over a 20-week period during two summers (pretest summer, posttest summer) by trained research assistants. Observations were suspended during rain.
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Timepoint [1]
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One-year
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Secondary outcome [1]
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Solar Ultraviolet Radiation Level
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Assessment method [1]
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Average potential UV exposure for a user of the passive recreation area assessed in standard erythemal units, based on measurements from a handheld UV meter performed by trained research assistants during assessment of the primary outcome.
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Timepoint [1]
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One-year
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Eligibility
Key inclusion criteria
* Passive recreation areas had to be located in public parks in Denver, Colorado USA or Melbourne, Victoria Australia metropolitan area.
* Parks had to contain at least two unshaded PRAs and be administered by the study municipalities,
* Passive recreation areas had to meet the definition of a passive recreation area, i.e., areas for sitting/standing while socializing, preparing/eating a meal, watching or coaching sports, watching a concert, taking a class, or waiting, or areas where people stroll (walk slowly) for sightseeing while observing outdoor displays (e.g., festivals, gardens, zoo exhibits).
* Passive recreation areas had to be in full sun (i.e. no shade) at pretest.
* Passive recreation areas had to contain a space where a shade sail could be constructed, i.e., free from underground or above ground obstructions, relatively level, and large enough to accommodate the shade sail.
* Passive recreation areas had to be approved by parks department staff for shade sail construction.
* Adults had to appear to be 18 years of age or older.
* Adults had to be in the public parks.
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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?
Yes
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Key exclusion criteria
* Passive recreation areas where major construction/ redevelopment of the parks was planned within the study period.
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Study design
Purpose of the study
Prevention
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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)
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Methods used to generate the sequence in which subjects will be randomised (sequence generation)
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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
Parallel
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Other design features
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Phase
NA
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Type of endpoint/s
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Statistical methods / analysis
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Recruitment
Recruitment status
Completed
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Data analysis
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Reason for early stopping/withdrawal
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Other reasons
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Date of first participant enrolment
Anticipated
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Actual
1/07/2010
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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
31/05/2017
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Sample size
Target
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Accrual to date
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Final
144
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Recruitment in Australia
Recruitment state(s)
VIC
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Recruitment hospital [1]
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Cancer Council Victoria - Melbourne
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Recruitment postcode(s) [1]
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3004 - Melbourne
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Recruitment outside Australia
Country [1]
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United States of America
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State/province [1]
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Colorado
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Funding & Sponsors
Primary sponsor type
Commercial sector/industry
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Name
Klein Buendel, Inc.
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Address
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Country
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Other collaborator category [1]
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Other
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Name [1]
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Cancer Council Victoria
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Address [1]
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Country [1]
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Ethics approval
Ethics application status
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Summary
Brief summary
Use of shade when outdoors is recommended by health authorities worldwide to reduce overall exposure to ultraviolet radiation. However, expensive physical environment changes are often required to provide shade and may be effective only when health education has created a social environment that motivate shade use. A multi-national research team will explore the use of built shade in passive recreation areas within public parks and compare use of built shade between the United States and Australia. The specific aims of the project are to: a) introduce built shade structures (i.e., shade sails) in public parks in Denver and Melbourne; b) compare the use of passive recreation areas with and without built shade; c) compare the change in use of the passive recreation areas in Denver and Melbourne after introduction of built shade, and d) examine the relationship among social environment and physical features of the environment and built shade.
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Trial website
https://clinicaltrials.gov/study/NCT02971709
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Trial related presentations / publications
Buller DB, English DR, Buller MK, Simmons J, Chamberlain JA, Wakefield M, Dobbinson S. Shade Sails and Passive Recreation in Public Parks of Melbourne and Denver: A Randomized Intervention. Am J Public Health. 2017 Dec;107(12):1869-1875. doi: 10.2105/AJPH.2017.304071. Epub 2017 Oct 19.
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Public notes
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Contacts
Principal investigator
Name
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David Buller, PhD
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Address
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Klein Buendel, Inc.
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Country
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Phone
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Fax
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Email
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Contact person for public queries
Name
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Address
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Country
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Phone
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Fax
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Email
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Contact person for scientific queries
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
No documents have been uploaded by study researchers.
Results not provided in
https://clinicaltrials.gov/study/NCT02971709
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