| Value | Category | Cases | |
|---|---|---|---|
| 0 | 132 |
39.3%
|
|
| 1 | 178 |
53%
|
|
| 2 | 20 |
6%
|
|
| 3 | 4 |
1.2%
|
|
| 4 | 1 |
0.3%
|
|
| 10 | 1 |
0.3%
|
|
| Sysmiss | 1461 |