| Value | Category | Cases | |
|---|---|---|---|
| 0 | nr | 0 |
0%
|
| 1 | yes | 50 |
2.4%
|
| 2 | no | 1970 |
95.9%
|
| 3 | don't know | 34 |
1.7%
|
| 9 | na | 0 |
0%
|
| 99 | 1 |
0%
|
|
| Sysmiss | 945 |