| Value |
Category |
| 1 |
less than 100 m |
| 2 |
100-200 m |
| 3 |
200-500 m |
| 4 |
500-1000 m |
| 5 |
more than 1000 m |
| 9 |
no answer, refused to answer |
| 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.