| Value | Category | Cases | |
|---|---|---|---|
| 1 | Formal written | 4 |
28.6%
|
| 2 | Oral with witness | 0 |
0%
|
| 3 | Oral without witness | 1 |
7.1%
|
| 4 | None(informal) | 5 |
35.7%
|
| 5 | Other specify | 4 |
28.6%
|
| Sysmiss | 5862 |