| Value | Category | Cases | |
|---|---|---|---|
| 0 | 3870 |
88.7%
|
|
| 1 | 229 |
5.3%
|
|
| 2 | 100 |
2.3%
|
|
| 3 | 162 |
3.7%
|
|
| 999 | 999. missing | 0 |
0%
|
| Sysmiss | 177 |