| Value | Category | Cases | |
|---|---|---|---|
| 0 | 91 |
34.1%
|
|
| 1 | 151 |
56.6%
|
|
| 2 | 20 |
7.5%
|
|
| 3 | 3 |
1.1%
|
|
| 4 | 1 |
0.4%
|
|
| 6 | 1 |
0.4%
|
|
| Sysmiss | 6961 |