| Value | Category | Cases | |
|---|---|---|---|
| 1 | Days | 30 |
9.4%
|
| 2 | Weeks | 16 |
5%
|
| 3 | Months | 271 |
85%
|
| 98 | Don't Know | 2 |
0.6%
|
| Sysmiss | 1236 |