| Value | Category | Cases | Weighted | |
|---|---|---|---|---|
| 1 | Spontaneously | 41 | 3785 |
0.8%
|
| 2 | After probe | 4966 | 404486 |
86.2%
|
| 3 | No | 719 | 60947 |
13%
|
| 9 | Missing | 3 | 184 |
0%
|
| Sysmiss | 32360 | 0 |