| Value | Category | Cases | |
|---|---|---|---|
| 1 | 1. Limited duration | 15 |
16.7%
|
| 2 | 2. Permanent nature | 1 |
1.1%
|
| 3 | 3. Unspecified duration | 74 |
82.2%
|
| Sysmiss | 1656 |