| Value | Category | Cases | Weighted | |
|---|---|---|---|---|
| 0 | no | 1 | 1 |
0%
|
| 1 | yes (spontaneous) | 3285 | 3289 |
100%
|
| 2 | yes (prompted) | 0 | 0 |
0%
|
| Sysmiss | 7 | 3 |