| Value | Category | Cases | |
|---|---|---|---|
| 1 | Merely by looking at him | 0 |
0%
|
| 2 | By medical examination | 2 |
7.1%
|
| 3 | By blood test | 2 |
7.1%
|
| 4 | Other (specify) | 18 |
64.3%
|
| 5 | Do not know | 6 |
21.4%
|
| Sysmiss | 11981 |