| Value | Category | Cases | Weighted | |
|---|---|---|---|---|
| 1 | Spontaneously | 209 | 17053 |
3.6%
|
| 2 | After probe | 4610 | 375805 |
80.1%
|
| 3 | No | 907 | 76361 |
16.3%
|
| 9 | Missing | 3 | 184 |
0%
|
| Sysmiss | 32360 | 0 |