| Value | Category | Cases | |
|---|---|---|---|
| 1 | 0 | 57 |
7.2%
|
| 2 | 1 | 62 |
7.8%
|
| 3 | 2 | 125 |
15.7%
|
| 4 | 3 or more | 551 |
69.3%
|
| Sysmiss | 28 |