| Value | Category | Cases | Weighted | |
|---|---|---|---|---|
| 1 | Spontaneously | 405 | 33708 |
7.2%
|
| 2 | After probe | 3891 | 314901 |
67.1%
|
| 3 | No | 1433 | 120793 |
25.7%
|
| Sysmiss | 32360 | 0 |