| Value |
Category |
Cases |
|
| -9 |
Don't know (spontaneous) |
5 |
|
| -7 |
Does not apply (spontaneous) |
25 |
|
| 1 |
Very easy |
18 |
|
| 2 |
Easy |
125 |
|
| 3 |
Difficult |
168 |
|
| 4 |
Very Difficult |
53 |
|
| Sysmiss |
|
625 |
|
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.
