| Value | Category | Cases | |
|---|---|---|---|
| 0 | 49 |
21.8%
|
|
| 1 | 167 |
74.2%
|
|
| 2 | 6 |
2.7%
|
|
| 3 | 1 |
0.4%
|
|
| 99 | Not applicable | 2 |
0.9%
|
| Sysmiss | 25 |