Table 1 Participant baseline ^a characteristics, exposures and potentially confounding variables used in the analysis

Race/Ethnicity

  African American

  Asian

  Hispanic

  Non-Hispanic White

  Other

Gender

  Male

  Female

Individual and household characteristics

Parental Education

  Less than High School

  High School

  Above High School

Second hand smoke

  No one ever smoked in the house

  Anyone ever smoked in the house

Ever Asthma

  No

  Yes

Spanish Speaker

  No

  Yes

Local home or school environment

  Having no food stores within 500 m road network buffer

  No

  Yes

Street connectivity

  (Gamma index 500 m buffer)

Parks and recreation

  (unit: acre in 500 m buffer)

NDVI green cover^b (in 500 m buffer)

Recreation programs within 5 km

Community social context

Proportion of unemployed males and females

Community level violent crime rate

  (Crimes per 100,000 population)

Air pollution and traffic

Total NO_X (parts per billion)

Traffic density within 150 m of the home

Primary outcome

BMI at baseline

  Males

  Females

BMI at the end of follow up

  Males

  Females

BMI CDC percentile at baseline

  85 > BMIp

  85 ≤ BMIp < 95

  95 ≤ BMIp