| Value | Category | Cases | |
|---|---|---|---|
| 0 | None | 0 |
0%
|
| 1 | Days | 75 |
2.4%
|
| 2 | Weeks | 213 |
6.7%
|
| 3 | Months | 1975 |
62%
|
| 4 | Years | 903 |
28.3%
|
| 8 | Unknown | 20 |
0.6%
|
| 9 | Missing | 40 |