| Value | Category | Cases | |
|---|---|---|---|
| 0 | None | 0 |
0%
|
| 1 | Days | 10 |
1%
|
| 2 | Weeks | 27 |
2.8%
|
| 3 | Months | 480 |
49.4%
|
| 4 | Years | 447 |
46%
|
| 8 | Unknown | 7 |
0.7%
|
| 9 | Missing | 15 |