| Value | Category | Cases | |
|---|---|---|---|
| 1 | days | 157 |
29%
|
| 2 | months | 216 |
39.9%
|
| 3 | years | 167 |
30.8%
|
| 9 | special answers | 2 |
0.4%
|
| Sysmiss | 15443 |