| Value | Category | Cases | |
|---|---|---|---|
| 0 | no | 1592 |
29.4%
|
| 1 | yes, spontaneously | 988 |
18.3%
|
| 2 | yes, probed | 2832 |
52.3%
|
| 8 | not asked | 0 |
0%
|
| Sysmiss | 9 |