Table 1.

Summary statistics for Healthy Communities for Teens Wave 1 data (n = 231)

	Mean	SD	Min	Max
Participant Characteristics
Median household income (residential block group)	10.0	4.2	2.2	22.8
EMA responses	16.5	6.3	3.0	43.0
% EMA responses positive for alcohol consumption	3.1	9.7	0.0	66.7
GPS Data Collection
GPS points collected	35640.2	6650.9	12858.0	45244.0
Time followed (hours)	604.3	110.5	215.1	764.4
% Time spent at home	69.0	14.4	13.0	97.5
Total distance (km)	1522.0	686.2	301.7	4612.2
Activity points	4.9	2.9	1.0	14.0
Polyline segment length (m)	42.8	184.5	0	7677.7
Residential Location Measures
Circular buffer (800m)	9.4	14.7	0.0	99.0
Census block group (count)	3.6	6.4	0.0	47.0
Census tract (count)	11.2	14.5	0.0	87.0
Census block group (count per square km)	5.0	10.4	0.0	105.9
Census tract (count per square km)	4.5	6.9	0.0	63.7
Inverse distance weighted sum of 7 nearest outlets (Euclidean km)	15.5	14.5	1.7	117.2
Activity Location Measures
Circular buffer (800m)	57.6	46.3	0.0	237.0
Convex hull	39.3	62.0	0.0	490.0
Standard deviation ellipse	62.4	81.3	0.0	669.0
Standard deviation ellipse (time-weighted)	16.2	36.0	0.0	254.0
Roadway network distance (100m buffer)	150.8	166.6	0.0	977.0
GPS-Based Measures
Buffer around activity path line (100m buffer)	417.4	243.5	0.0	1265.0
Outlet–hours per hour (100m buffer)	0.3	0.6	0.0	5.5
Outlet–hours per hour - excluding home (100m buffer)	1.0	1.9	0.0	18.5
% Time exposed to any outlet (100m buffer)	9.6	18.2	0.0	95.8
Outlet–hours per hour - two week data (100m buffer)	0.3	0.6	0.0	5.7
Outlet–hours per hour - one week data (100m buffer)	0.3	0.7	0.0	5.9
Outlet–hours per hour - one day data (100m buffer)	0.3	0.6	0.0	6.3
EMA: Ecologic momentary assessment