| Value | Category | Cases | |
|---|---|---|---|
| 1 | Years | 59 |
92.2%
|
| 2 | Months | 3 |
4.7%
|
| 3 | Weeks | 0 |
0%
|
| 4 | Days | 0 |
0%
|
| 7 | Not Applicable | 2 |
3.1%
|
| Sysmiss | 877 |