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Table 2 Summary of study variables

From: Built environment and active play among Washington DC metropolitan children: A protocol for a cross-sectional study

Exposure study variables Study covariates (continued)
Objective built environment Measures Body size and health conditions
 Open recreational space  Child BMI
 Block size  Parent BMI
 Block length  Child anxiety
 Intersection density  Child asthma
 Residential density  Child ADHD/ADD
Home and neighborhood characteristics Child electronic availability and use
 Home building type  Presence of electronics in bedroom
 Home yard  Ownership of electronics
 Street sidewalks  Minutes/day of sedentary behavior
 Street type Child active commuting
Neighborhood accessibility  Frequency of active commuting
 Education destinations  Duration of active commuting
 Transport destinations Dog ownership
 Recreation destinations  Frequency of child dog walking
 Food retail destinations  Frequency of child dog playing
 Social destinations Parent rules
Outcome study variable  Child’s homework rules
Child active Play  Child’s electronic use rules
 Minutes/day of active play  Child’s outdoor play rules
 Occurrence of active play Parent neighborhood perceptions
Study covariates  Perceived neighborhood safety
Demographics  Perceived neighborhood quality
 Child age Parent physical activity
 Child sex  Employment physical activity
 Child race/ethnicity  Recreational physical activity
 Child nativity Active play qualifiers
 Child education  Location of active play
 Parent age  Type of active play
 Parent sex  Independence of active play
 Parent race/ethnicity Weather
 Parent nativity  Total rainfall
 Parent education  Mean temperature
 Household income