| Value | Category | Cases | |
|---|---|---|---|
| 0 | None | 1 |
1.2%
|
| 1 | Day | 7 |
8.2%
|
| 2 | Week | 15 |
17.6%
|
| 3 | Month | 21 |
24.7%
|
| 4 | Year | 41 |
48.2%
|
| Sysmiss | 21427 |