| Value | Category | Cases | |
|---|---|---|---|
| 1 | 0 | 27 |
2.5%
|
| 2 | 1 | 65 |
6.1%
|
| 3 | 2 | 163 |
15.2%
|
| 4 | 3 or more | 817 |
76.2%
|
| Sysmiss | 9 |