| Value |
Category |
| 0 |
not an obstacle |
| 1 |
degree 1 |
| 2 |
degree 2 |
| 3 |
degree 3 |
| 4 |
big obsticle |
| 5 |
|
| 6 |
|
| 7 |
|
| 8 |
|
| 9 |
|
| 10 |
|
| 11 |
|
| 12 |
|
| 13 |
|
| 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.