Table 4.

Average distance travelled by population density

Population density	Miles (Mean ± St.dev)			p a
	All	Active	Inactive
A big city (>500,000)	2.04 ± 3.85	1.02 ± 0.79	3.91 ± 5.97	<0.001
Suburbs (<500,000)	2.23 ± 2.99	1.02 ± 0.83	4.01 ± 3.98	<0.001
Town (<50,000)	3.01 ± 4.98	0.93 ± 0.88	5.08 ± 6.33	<0.001
Village/rural area (<5,000)	6.75 ± 5.33	1.04 ± 1.22	7.57 ± 5.20	<0.001

^a p-values for difference between mode types within each category. Bonferoni correction applied, significance level of .012 required