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Table 1 Description of outcome and exposure variables (analytical sample, N = 3379)

From: Built environment and physical activity: domain- and activity-specific associations among Brazilian adolescents

Variable Units Mean (SD) Median Min-Max N (%)
Outcome variables – physical activity
 Total MVPA – Minutes per day spent in moderate to vigorous physical activity (accelerometry) Minutes/day 42.9 (42.7) 31.5 0–499 -
 Leisure walking – Minutes per week spent in walking during leisure time Minutes/week 59.2 (150.4) 0 0–2100 -
 Any leisure walking (Yes/No) Proportion - - - 1089 (32.3)
 Leisure MVPA – Minutes per week spent in moderate to vigorous physical activity during leisure time Minutes/week 336.5 (520.4) 120.0 0–4680 -
 Any leisure MVPA (Yes/No) Proportion - - - 2021 (60.0)
 Commuting physical activity – Minutes per week spent in commuting physical activity Minutes/week 273.7 (467.1) 150 0–9300 -
 Any commuting physical activity (Yes/No) Proportion - - - 2953 (88.3)
Environmental variables
INFORMATION BASED ON DEMOGRAPHIC CENSUS 2010 AND STREET NETWORK PATTERN
 Population density – Population density of the buffer People/km2 6353 (2843) 6401 28–16,801 -
 Population aged 16–20 y density – Population density of people aged 16–20 years of the buffer People/km2 637 (310) 598 2–1775 -
 Average family income per capita – Average family income per capita of the buffer Minimum wage 0.7 (0.1) 0.7 0.4–1.1 -
 Connectivity between four or more streets – Number of at least four –way intersections in the buffer Number 18 (13) 16 0–79 -
 Street lighting proportion – Proportion of households with near public street lighting in the buffer Proportion 0.87 (0.19) 0.95 0–1 -
 Paved streets proportion – Proportion of households located in paved streets, in the buffer Proportion 0.17 (0.26) 0.01 0–0.95 -
 Sidewalks proportion – Proportion of households with sidewalks in front, in the buffer Proportion 0.25 (0.30) 0.1 0–1 -
 Trees existence proportion – Proportion of households presenting trees around, in the buffer Proportion 0.80 (0.20) 0.85 0–1 -
 Open sewage proportion – Proportion of households with open sewage in front, in the buffer Proportion 0.34 (0.25) 0.32 0–1 -
 Spread garbage proportion – Households with spread garbage in front, in the buffer Proportion 0.06 (0.06) 0.03 0–0.5 -
PHYISICAL ACTIVITY ATTRIBUTES
 Public open spaces – Number of public open spaces (parks and boulevards) in the buffer Number/Proportiona 3.2 (3.0) 2 0–19 2870 (86.3)
 Public open spaces with at least on physical activity attribute – Number of public open spaces with at least one physical activity attribute regardless its quality Number/Proportiona 2.1 (2.1) 1 0–11 2526 (75.9)
 Public open spaces with at least on physical activity attribute of ‘regular’ quality – Number of public open spaces with at least one physical activity attribute considered of regular quality Number/Proportiona 1.6 (1.8) 1 0–11 2170 (65.2)
 Public open spaces with at least on ‘good’ physical activity attribute – Number of public open spaces with at least one physical activity attribute considered of good quality Number/Proportiona 0.8 (1.3) 0 0–9 1411 (42.4)
 Walking paths/trails – Number of walking paths/trails in the buffer Number/Proportiona 0.9 (1.8) 0 0–11 884 (26.6)
 Football pitches – Number of football pitches in the buffer Number/Proportiona 1.5 (2.1) 1 0–11 1959 (58.9)
 Cycle paths/lanes – Number of cycle paths/lanes in the buffer Number/Proportiona 0.3 (0.6) 0 0–3 806 (23.9)
 Gym – Number of private gyms in the buffer Number/Proportiona 2 (3.7) 1 0–35 2165 (64.1)
 Beachfront – Existence of beachfront in the buffer Proportion - - - 42 (1.2)
 Total attributes for physical activity practice – Number of physical activity attributes in the buffer (open sports places, walking and cycle paths/trails, beachfront and gym) Number/Proportiona 5.3 (5.4) 4 0–20 2997 (90.1)
 Lower distance for any physical activity attribute – Lower distance to arrive in any physical activity attribute (open sports places, walking and cycle paths/trails, beachfront and gym) Meters 277 (295) 218 0–3900 -
  1. SD standard deviation
  2. Min-Max minimum and maximum values
  3. aProportion of existence of at least one attribute by buffer