| Value | Category | Cases | |
|---|---|---|---|
| 1 | 0 | 198 |
9.3%
|
| 2 | 1 | 317 |
15%
|
| 3 | 2 | 270 |
12.7%
|
| 4 | 3 or more | 1334 |
63%
|
| Sysmiss | 40 |