| Value | Category | Cases | |
|---|---|---|---|
| 1 | 0 | 136 |
5.9%
|
| 2 | 1 | 235 |
10.1%
|
| 3 | 2 | 369 |
15.9%
|
| 4 | 3 or more | 1580 |
68.1%
|
| Sysmiss | 36 |