| Value | Category | Cases | |
|---|---|---|---|
| 1 | None | 4100 |
76.1%
|
| 2 | One | 1153 |
21.4%
|
| 3 | Two | 102 |
1.9%
|
| 4 | Three or more | 36 |
0.7%
|
| Sysmiss | 19769 |