| Value | Category | Cases | |
|---|---|---|---|
| 1 | None | 3549 |
74.3%
|
| 2 | One | 1130 |
23.6%
|
| 3 | Two | 86 |
1.8%
|
| 4 | Three or more | 14 |
0.3%
|
| Sysmiss | 19710 |