| Value |
Category |
| 1 |
none |
| 2 |
straightforward |
| 3 |
moderate |
| 4 |
complex |
| 5 |
specialized |
| 6 |
refused |
| 7 |
DON'T KNOW |
| 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.