| Value | Category | Cases | Weighted | |
|---|---|---|---|---|
| 1 | Spontaneousl | 5247 | 429614 |
91.5%
|
| 2 | After probe | 425 | 35327 |
7.5%
|
| 3 | No | 57 | 4461 |
1%
|
| Sysmiss | 32360 | 0 |