| Value | Category | Cases | |
|---|---|---|---|
| 1 | Years | 399 |
91.1%
|
| 2 | Months | 37 |
8.4%
|
| 3 | Weeks | 2 |
0.5%
|
| 4 | Days | 0 |
0%
|
| 5 | Less Than 1 Day | 0 |
0%
|
| 7 | Don't Know | 0 |
0%
|
| Sysmiss | 7960 |