| Value | Category | Cases | |
|---|---|---|---|
| 0 | None | 3916 |
59.8%
|
| 1 | 1878 |
28.7%
|
|
| 2 | 666 |
10.2%
|
|
| 3 | 87 |
1.3%
|
|
| 4 | 5 |
0.1%
|
|
| Sysmiss | 1308 |