| Value | Category | Cases | |
|---|---|---|---|
| 1 | 1 Often | 68 |
4.8%
|
| 2 | 2 Sometimes | 108 |
7.7%
|
| 3 | 3 Not yet | 387 |
27.5%
|
| Sysmiss | 843 |
59.9%
|
|
| d | 2 |
0.1%
|