| Value | Category | Cases | |
|---|---|---|---|
| 1 | 0 | 84 |
3.9%
|
| 2 | 1 | 148 |
7%
|
| 3 | 2 | 313 |
14.7%
|
| 4 | 3 or more | 1582 |
74.4%
|
| Sysmiss | 31 |