. 2013 Apr 27;13:403. doi: 10.1186/1471-2458-13-403

Table 1.

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 Environment^aX Nutrition Environment^b	Cluster of ≥3 destinations (commercial locations, parks or schools)	San Diego County: 365	San Diego County: 76 (233, 117, 16)	San Diego County: 2009
NIK	6-11 and a parent	San Diego County, CA and Seattle/King County, WA	Activity Environment^aX Nutrition Environment^b		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	Walkability^cXIncome^d	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
TEAN	12-16 and a parent	Seattle/King County, WA and Baltimore, MD-DC	Walkability^cXIncome^d	Cluster of ≥3 commercial locations, a park, or a school	Maryland-DC: 470	Maryland-DC: 106 (42, 100, 6)	Maryland-DC: 2009-2010
SNQLS	65-97	Seattle/King County, WA	Walkability^cXIncome^d	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.