| Value | Category | Cases | |
|---|---|---|---|
| 1 | less than 1 week | 8 |
4.2%
|
| 2 | 1-4 weeks | 3 |
1.6%
|
| 3 | one month | 6 |
3.1%
|
| 4 | 2-6 months | 171 |
89.5%
|
| 5 | 7-12 months | 0 |
0%
|
| 6 | more than 12 months | 3 |
1.6%
|
| Sysmiss | 1130 |