Value | Category | Cases | |
---|---|---|---|
0 | neither certificate or registered | 33 |
3.6%
|
1 | has certificate | 49 |
5.4%
|
2 | registered | 9 |
1%
|
8 | don't know | 2 |
0.2%
|
9 | 1 |
0.1%
|
|
Sysmiss | 815 |