Table 1.

Characteristics of study sample

Number of participants	690
Number of block groups	380
Age, Mean (SD)	14.1 (1.5)
Female, %	50.5
White non-Hispanic, %	68.6
Parent with college degree, %	64.0
Parent married or living with partner, %	84.0
Number of vehicles in household, Mean (SD)	2.5 (1.0)
Device wear days, Mean (SD)	5.3 (2.0)
Accelerometer wear minutes/day, Mean (SD)	829.2 (79.1)
MVPA minutes/day, Mean (SD)	33.8 (20.5)
Sedentary minutes/day, Mean (SD)	542.4 (90.4)
Housing units per parcel, Mean (SD)	6.2 (9.5)
Intersections per square kilometer, Mean (SD)	74.0 (21.9)
Number of retail parcels, Mean (SD)	10.5 (21.1)
Number of entertainment parcels, Mean (SD)	0.1 (0.6)

Abbreviations: MVPA = moderate to vigorous physical activity; SD = standard deviation