| Value | Category | Cases | |
|---|---|---|---|
| 1 | 0 | 156 |
9.9%
|
| 2 | 1 | 233 |
14.7%
|
| 3 | 2 | 256 |
16.2%
|
| 4 | 3 or more | 936 |
59.2%
|
| Sysmiss | 42 |