| Value | Category | Cases | |
|---|---|---|---|
| 1 | 0 | 29 |
4.6%
|
| 2 | 1 | 68 |
10.8%
|
| 3 | 2 | 87 |
13.8%
|
| 4 | 3 or more | 448 |
70.9%
|
| Sysmiss | 8 |