| Value | Category | Cases | |
|---|---|---|---|
| 1 | Years | 62 |
42.8%
|
| 2 | Months | 63 |
43.4%
|
| 3 | Weeks | 5 |
3.4%
|
| 7 | Not Applicable | 15 |
10.3%
|
| Sysmiss | 796 |