| Value | Category | Cases | |
|---|---|---|---|
| 0 | 146 |
66.4%
|
|
| 1 | 69 |
31.4%
|
|
| 2 | 1 |
0.5%
|
|
| 8 | 1 |
0.5%
|
|
| 99 | Not applicable | 3 |
1.4%
|
| Sysmiss | 30 |