A report on participant sampling and recruitment for travel and physical activity data collection : final technical report, July 2009.
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2009-07-01
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Subject/TRT Terms:
- Mode choice
- Surveys
- Street railroads
- Public transit
- Travel behavior
- Light rail transit Choice of transportation--Washington (State)--Seattle
- Street-railroads--Ridership--Washington (State)--Seattle
- Local transit--Ridership--Washington (State)--Seattle
- Exercise--Washington (State)--Seattle
- Household surveys--Washington (State)--Seattle
- Sampling (Statistics)
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Edition:Final research report.
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Abstract:The substantial investments now being made in transit yield benefits that go beyond managing traffic congestion relief, ; and include improved environmental quality and potential gains in human health due to increased physical activity. Past ; research on the effects of such infrastructure investments on mode choice and physical activity has been hampered by ; cross-sectional designs that limit the ability to draw causal inference. A 5-year $3.3 million study was submitted to the ; National Institutes of Health. The study takes advantage of the introduction of light rail transit (LRT) in Seattle. Using a ; case-control longitudinal panel design, 1000 adults living either close to (within 1 mile; case) or far from (control) an LRT ; station will be assessed prior to (baseline), soon after (post 1), and more than 2 years after (post 2) the introduction of ; LRT service. It is hypothesized that residents living close to LRT will have an increase in transportation-related walking ; and total physical activity relative to residents living farther away. Individuals’ walking will be assessed via integrated ; information from portable GPS and a 7-day travel diary, and physical activity assessed via accelerometry. Neighborhood ; built environment will be assessed via parcel-level land use evaluation. Changes in non-LRT infrastructure and ; availability (e.g., bus routes) will also be considered. The proposal has been favorably reviewed once by NIH. The ; resubmission deadline is in early March. The December 2008 project start date does not give the research team the time ; needed to set up the protocol and collect the baseline data before Light Rail opens in July 2009. As a result, the research ; team has sought bridge funding for a May 2008 project start. TransNow support will contribute to this bridge funding and ; insure that baseline data can be collected on 1000 subjects for 7-day travel patterns. The study natural experiment design ; has strong potential to make a significant contribution to scientific knowledge and to transportation policy. The ; prospective evaluation of changes in the same individuals’ transport modes and physical activity over a period of marked ; change in transportation and built environment is a rare, but potent test of the impact transportation investments on ; behavior.
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Main Document Checksum:urn:sha-512:170e620784fef85e57e086dc0edee060154fa43e523d9fa53230cd1b8cac24502fcbb2064d32281ec7486f43c68ef3e201dc341d8501a79cbc738fa2ec8b5559