| Value |
Category |
| 1 |
adjacent |
| 2 |
less than 30 minutes |
| 3 |
between 30 minutes and 1 hour |
| 4 |
one to three hours walking |
| 5 |
more than 3 hours |
| Sysmiss |
|
Warning: these figures indicate the number of cases found in the data file. They cannot be interpreted as summary statistics of the population of interest.