| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 0 |
0%
|
| 1 | Days | 12 |
10.7%
|
| 2 | Weeks | 43 |
38.4%
|
| 3 | Months | 54 |
48.2%
|
| 4 | Years | 3 |
2.7%
|
| Sysmiss | 1080 |