| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weeks | 65 |
3.1%
|
| 2 | Months | 151 |
7.3%
|
| 3 | Years | 1864 |
89.6%
|
| 99 | 1 |
0%
|
|
| 0 | Nonresponse | 46 | |
| 9 | NA | 17 | |
| Sysmiss | 856 |