| Value | Category | Cases | |
|---|---|---|---|
| 0 | No | 862 |
36.8%
|
| 1 | Yes (spontaneous) | 1427 |
60.9%
|
| 2 | Yes (prompted) | 56 |
2.4%
|
| 9 | 1 | ||
| Sysmiss | 226 |