|Study characteristics and designs: Neighborhood Impact on Kids (NIK) Study, Teen Environment and Neighborhood (TEAN) Study, and Senior Neighborhood Quality of Life Study (SNQLS)|
|Study||Ages of participants||Regions||Design (quadrants sampled)||Eligible destinations||Total sample size: All routes||Reliability pair sample size: # routes (# segments, # crossings, # cul-de-sacs)||Years of MAPS data collection|
|NIK||6-11 and a parent||San Diego County, CA and Seattle/King County, WA||Activity EnvironmentaX Nutrition Environmentb||Cluster of ≥3 destinations (commercial locations, parks or schools)||San Diego County: 365||San Diego County: 76 (233, 117, 16)||San Diego County: 2009|
|Seattle/King County: 393||Seattle/King County: 0 (0, 0, 0)||Seattle/King County: 2009-2010|
|TEAN||12-16 and a parent||Seattle/King County, WA and Baltimore, MD-DC||WalkabilitycXIncomed||Cluster of ≥3 commercial locations, a park, or a school||Seattle/King County: 427||Seattle/King County: 72 (167, 67, 31)||Seattle/King County: 2010|
|Maryland-DC: 470||Maryland-DC: 106 (42, 100, 6)||Maryland-DC: 2009-2010|
|SNQLS||65-97||Seattle/King County, WA||WalkabilitycXIncomed||Cluster of ≥3 destinations (commercial locations, parks, or school)||Seattle/King County: 462||Seattle/King County: 36 (74, 35, 0)||Seattle/King County: 2009|
a Defined by block group walkability and park access.
b Defined by the presence or absence of grocery stores and fast food restaurants.
c Walkability index defined by GIS-derived residential density, intersection density, retail floor area ratio, and mixed use.
d Based on 2000 census data for block group median household income.
Millstein et al.
Millstein et al. BMC Public Health 2013 13:403 doi:10.1186/1471-2458-13-403