| Value |
Category |
| -99 |
dk |
| -77 |
na |
| 0 |
no obstacle |
| 1 |
minor obstacle |
| 2 |
moderate obstacle |
| 3 |
major obstacle |
| 4 |
very severe obstacle |
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.
