| Value | Category | Cases | |
|---|---|---|---|
| 1 | 0 | 205 |
6.9%
|
| 2 | 1 | 274 |
9.2%
|
| 3 | 2 | 504 |
16.9%
|
| 4 | 3 or more | 1996 |
67%
|
| Sysmiss | 55 |