| Value |
Category |
| -9 |
REFUSED |
| -7 |
DON'T KNOW |
| 1 |
VERY EASY |
| 2 |
SOMEWHAT EASY |
| 3 |
NEITHER EASY NOR HARD |
| 4 |
SOMEWHAT HARD |
| 5 |
VERY HARD |
| 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.