| Study Groups | Data Source and Measurement | |||
---|---|---|---|---|---|
 | Overall Cohort | Behavioral Cohort | Environmental Data | KP EMR | Measurement Method and/or Time Frame |
OUTCOME MEASURES |  |  |  |  | All 3 years pre- and post-light rail transit (LRT) |
Medical Care Costs | X | Â | Â | X | Â |
Body Mass Index | X | Â | Â | X | Â |
Blood pressure | X | Â | Â | X | Â |
Laboratory Data (lipids, HgbA1c) | X | Â | Â | X | Â |
INDIVIDUAL COVARIATES | |||||
Age, sex | X | Â | Â | X | Â |
Race, ethnicity | X | Â | Â | X | Â |
Smoking, alcohol use | X | Â | Â | X | Â |
Chronic disease/co-morbidities (diagnoses) | X |  |  | X | Charlson Index [44], 3 years pre- and post- LRT |
Medication use | X |  |  | X | 3 years pre- and post- LRT |
TRANSPORTATION AND NEIGHBORHOOD PERCEPTIONS SURVEY VARIABLES | * | Â | Â | Â | All baseline and 1-year post-LRT |
Race/ethnicity details, income, education | * | X | Â | Â | Census Items |
Functional Status | * | X | Â | Â | |
Duration of residence prior to enrollment | * | X | Â | Â | Prior 3 addresses |
Residential Preference | * | X | Â | Â | MetroAtlanta Pref Survey |
Perceived Walkability | * | X | Â | Â | Â |
Transportation Use | * | X | Â | Â | Â |
Household Environment | * | X | Â | Â | Occupants, exercise equipment, pets |
Worksite Environment | * | X | Â | Â | |
PHYSICAL ACTIVITY AND TRANSPORTATION MEASURES | Â | Â | Â | Â | At baseline and 1-year post-LRT |
Accelerometry |  | X |  |  | 7-Day Actigraph® GT3X+, |
GPS tracking | Â | X | Â | Â | 7-day BT Q1000XT GPS |
Travel Diary | Â | X | Â | Â | 7-day Modified 2009 NTHS [54] |
BUILT ENVIRONMENT VARIABLES | Â | Â | Â | Â | Â |
Neighborhood walkability | Â | X | X | Â | Â |
Regional transportation accessibility* | Â | X | X | Â | Â |
Pedestrian Landscape | Â | X | X | Â | MAPS tool [66] |
Park Access | Â | X | X | Â | Â |