| Value | Category | Cases | |
|---|---|---|---|
| 0 | 0 | 49 |
5.1%
|
| 1 | 1 | 306 |
31.6%
|
| 2 | 2 | 470 |
48.5%
|
| 3 | 3 or more | 144 |
14.9%
|
| Sysmiss | 20 |