| Value | Category | Cases | |
|---|---|---|---|
| -999 | 104 |
9.4%
|
|
| -888 | 34 |
3.1%
|
|
| 0 | 624 |
56.6%
|
|
| 1 | 4 |
0.4%
|
|
| 2 | 36 |
3.3%
|
|
| 3 | 35 |
3.2%
|
|
| 4 | 51 |
4.6%
|
|
| 5 | 40 |
3.6%
|
|
| 6 | 42 |
3.8%
|
|
| 7 | 133 |
12.1%
|
|
| Sysmiss | 4097 |