| Value | Category | Cases | Weighted | |
|---|---|---|---|---|
| 1 | Spontaneously | 2323 | 186774 |
39.8%
|
| 2 | After probe | 1737 | 145739 |
31%
|
| 3 | No | 1669 | 136890 |
29.2%
|
| Sysmiss | 32360 | 0 |