| Value | Category | Cases | |
|---|---|---|---|
| 0 | 420 |
10.8%
|
|
| 1 | 795 |
20.4%
|
|
| 2 | 324 |
8.3%
|
|
| 3 | 155 |
4%
|
|
| 4 | 4+ | 246 |
6.3%
|
| 5 | never used | 1958 |
50.2%
|
| Sysmiss | 18 |