| Value | Category | Cases | |
|---|---|---|---|
| 1 | 0 | 220 |
9%
|
| 2 | 1 | 266 |
10.8%
|
| 3 | 2 | 408 |
16.6%
|
| 4 | 3 or more | 1558 |
63.5%
|
| Sysmiss | 88 |