| Value | Category | Cases | |
|---|---|---|---|
| 1 | 0 | 251 |
16.5%
|
| 2 | 1 | 434 |
28.5%
|
| 3 | 2 | 303 |
19.9%
|
| 4 | 3 or more | 533 |
35%
|
| Sysmiss | 53 |