| Value | Category | Cases | |
|---|---|---|---|
| 1 | 0 | 7 |
1.7%
|
| 2 | 1 | 300 |
71.6%
|
| 3 | 2 | 84 |
20%
|
| 4 | 3 or more | 28 |
6.7%
|
| Sysmiss | 53 |