| Value | Category | Cases | Weighted | |
|---|---|---|---|---|
| 1 | Spontaneously | 30 | 2897 |
0.6%
|
| 2 | After probe | 4538 | 372854 |
79.4%
|
| 3 | No | 1158 | 93467 |
19.9%
|
| 9 | Missing | 3 | 184 |
0%
|
| Sysmiss | 32360 | 0 |