| Value | Category | Cases | |
|---|---|---|---|
| 1 | 0 | 45 |
3.7%
|
| 2 | 1 | 80 |
6.7%
|
| 3 | 2 | 175 |
14.5%
|
| 4 | 3 or more | 903 |
75.1%
|
| Sysmiss | 31 |