| Value | Category | Cases | |
|---|---|---|---|
| 1 | 1. none | 9 |
23.7%
|
| 2 | 2. one | 17 |
44.7%
|
| 3 | 3. two | 6 |
15.8%
|
| 4 | 4. three or more | 6 |
15.8%
|
| Sysmiss | 61 |