| Value | Category | Cases | |
|---|---|---|---|
| 1 | 0 | 145 |
5.1%
|
| 2 | 1 | 402 |
14.2%
|
| 3 | 2 | 600 |
21.2%
|
| 4 | 3 or more | 1688 |
59.5%
|
| Sysmiss | 35 |