| Value | Category | Cases | |
|---|---|---|---|
| 1 | days | 58 |
33.5%
|
| 2 | months | 87 |
50.3%
|
| 3 | years | 27 |
15.6%
|
| 9 | special answers | 1 |
0.6%
|
| Sysmiss | 15812 |