| Value | Category | Cases | |
|---|---|---|---|
| 1 | 0 | 242 |
8.7%
|
| 2 | 1 | 357 |
12.9%
|
| 3 | 2 | 460 |
16.6%
|
| 4 | 3 or more | 1708 |
61.7%
|
| Sysmiss | 69 |