TABLE 2.
Descriptive statistics of environmental variables stratified by age groups
| Mean (SD) min/max | ||||||
|---|---|---|---|---|---|---|
| Environmental variables | all | pre-school children | School children | |||
| Residents per km2 | 2535 (884) | 211/4173 | 2587 (757) | 596/3940 | 2517 (919) | 211/4173 |
| Land use mix | 0.63 (0.18) | 0/0.98 | 0.63 (0.18) | 0/0.98 | 0.64 (0.18) | 0/0.98 |
| Playgrounds per km2 | 3.3 (1.1) | 0.3/5.6 | 3.3 (0.9) | 1.0/5.4 | 3.3 (1.1) | 0.3/5.6 |
| Green spaces per km2 | 2.7 (2.8) | 0/11.7 | 3.2 (3.1) | 0.1/11.7 | 2.6 (2.7) | 0/11.7 |
| Parks per km2 | 0.9 (0.5) | 0/2.6 | 0.8 (0.5) | 0/2.1 | 0.9 (0.6) | 0/2.6 |
| Intersections per km2 | 59.3 (15.3) | 20.8/91.1 | 59.6 (13.9) | 24.2/86.6 | 59.2 (15.7) | 20.8/91.1 |
| Public transit stops per km2 | 4.6 (1.4) | 1.0/7.0 | 4.6 (1.4) | 1.2/7.0 | 4.6 (1.4) | 1.0/6.9 |
| Walkability index (three-dimensions)a | −0.07 (1.8) | −4.9/5.6 | −0.00 (1.5) | −3.4/3.5 | −0.09 (1.9) | −4.9/5.6 |
| Walkability index (four-dimensions)a | −0.07 (2.5) | −6.8/6.8 | 0.08 (2.2) | −5.0/4.7 | −0.12 (2.6) | −6.8/6.8 |
| Moveability index (incl. playgrounds) | −0.09 (3.8) | −9.8/9.0 | 0.07 (3.5) | −8.7/9.0 | −0.14 (4.0) | −9.8/8.9 |
| Moveability index (incl. POS)b | −0.09 (3.8) | −10.0/8.4 | 0.07 (3.5) | −8.7/8.4 | −0.14 (4.0) | −10.0/8.4 |
| Moveability index (incl. OS)c | −0.12 (3.7) | −9.2/7.1 | 0.13 (3.5) | −8.5/6.8 | −0.20 (3.7) | −9.2/7.1 |