| Value | Category | Cases | |
|---|---|---|---|
| 1 | hour | 7 |
2.5%
|
| 2 | day | 32 |
11.6%
|
| 3 | week | 17 |
6.2%
|
| 4 | month | 210 |
76.4%
|
| 5 | year | 9 |
3.3%
|
| Sysmiss | [.a] invalid code | 0 | |
| Sysmiss | 40333 |