| Value |
Category |
| 1 |
1. Very easy |
| 2 |
2. Somewhat easy |
| 3 |
3. Neither easy nor difficult |
| 4 |
4. Somewhat difficult |
| 5 |
5. Very difficult |
| 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.