| Value | Category | Cases | |
|---|---|---|---|
| 0 | 182 |
80.9%
|
|
| 1 | 34 |
15.1%
|
|
| 3 | 1 |
0.4%
|
|
| 4 | 1 |
0.4%
|
|
| 99 | Not applicable | 7 |
3.1%
|
| Sysmiss | 25 |