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 |