# Table 2 Descriptive Statistics of Physical Activity, Sedentary Behavior and Contextual Variables

Variables Whole sample (n = 73) Sub-sample with GPS- estimated outdoor/indoor time (n = 66)
Accelerometry/GPS data validity
Accelerometer wear time, min/day (SD) 702 (66) 702 (67)
Valid days of accelerometer wear (SD) 6.5 (1.3) 6.4 (1.2)
Accelerometer/GPS valid data, min/day (SD) 644 (85) 647 (86)
Valid days of accelerometer/GPS data (SD) 6.4 (1.2) 6.4 (1.2)
Physical activity variables
Sedentary, min/day (SD) 371 (70) 371 (69)
MVPA, min/day (SD) 84 (40) 86 (41)
Counts per 30 seconds (SD) 313 (119) 320 (123)
% time sedentarya 53 (8) 53 (8)
% time in in MVPAa 12 (5) 12 (5)
Contextual variables
% time spent outdoors/indoors/in vehicle (SD)b
Outdoors - 35 (20)
Indoors - 59 (22)
In vehicle - 6 (5)
Whole sample (n = 73) In those visiting a location [n]c
% time at specific locations (SD)b
No fixed location (in transit/trips) 12 (7) 12 (7) [73]
Home 57 (22) 57 (22) [73]
Other locations in apartment complex 2 (5) 4 (7) [29]
Other residential home 7 (12) 9 (13) [58]
Child-care/school/daycare 14 (14) 22 (15) [45]
30 (10) [28]d
Park/playground 1 (2) 4 (5) [13]
Other (any business/service) without outdoor play area 5 (5) 5 (5) [71]
Other (any business/service) with outdoor play area 1 (5) 3 (7) [39]
Outside Houston 1 (3) 8 (9) [7]
1. Notes: a% time refers to % of valid accelerometry time. b% time refers to % of valid accelerometry/GPS unit time. cNumber of children who visited specific locations within the study period varied and is reported in square brackets [n]; d In children whose parents reported they were enrolled in child-care/school/daycare. GPS global positioning system, MVPA moderate-to-vigorous physical activity, SD standard deviation