| Value | Category | Cases | |
|---|---|---|---|
| 1 | More than six months | 5 |
0.3%
|
| 2 | One month | 14 |
0.8%
|
| 3 | Six months | 3 |
0.2%
|
| 4 | Three months | 4 |
0.2%
|
| Missing value | 1752 |
98.5%
|