| Value |
Category |
| 1 |
Not at all |
| 2 |
Somewhat difficult |
| 3 |
Very difficult |
| 4 |
Extremely dfficult |
| 9 |
Not applicable/not eligible/form not completed |
| 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.