Built environment and physical activity among adolescents: the moderating effects of neighborhood safety and social support

Table 1 Descriptive information for the analytical sample

		1 km buffer			2 km buffer
	N	Mean (SD)	Range		Mean (SD)	Range
Objectively assessed built environment variables
Recreation facilities (n)	358	1.4 (1.7)	0.0–11.0	5.2 (5.0)	0.0–30.0
Park area (km²)	358	0.4 (0.8)	0.0–5.8	1.2 (1.3)	0.0–9.7
Walkability score^a	358	−0.1 (2.2)	−5.7- 10.0	−0.1 (2.3)	−6.7-9.6
Street intersection (n)^b	358	88.8 (41.9)	6.0–289	349.1 (163.2)	25.0–1209.0
Residential density (dwelling/ha)	358	25.7 (8.3)	3.9–60.4	20.6 (6.8)	1.8–42.0
Land use mix^c	358	0.4 (0.2)	0.0–0.9	0.5 (0.1)	0.0–0.9
		Mean (SD)	Range
Potential moderators
Perceived safety from crime^d	358	3.4 (0.6)	1.3–4.0
Perceived traffic-related safety and pollution^e	357	3.0 (0.4)	1.5–4.0
Perceived parent support for PA^f	357	9.2 (4.1)	0.0–16.0
Perceived sibling/peer support for PA^g	355	3.7 (2.2)	0.0–8.0

Note: SD Standard deviation, PA Physical activity; ^astandardized sum of street intersections, residential density and land use mix; ^bcount of three or more way street intersections; ^cmix of land use based from 0 to 1; ^dhigher value indicates safest from crime; ^ehigher value indicates safest from traffic-related safety and pollution; ^fhigher value indicates better parent support for physical activity; ^ghigher value indicates better sibling/peer support for physical activity

ISSN: 1479-5868