| Value | Category | Cases | |
|---|---|---|---|
| 1 | less than 1 week | 4 |
8%
|
| 2 | 1-4 weeks | 1 |
2%
|
| 3 | one month | 4 |
8%
|
| 4 | 2-6 months | 41 |
82%
|
| 5 | 7-12 months | 0 |
0%
|
| 6 | more than 12 months | 0 |
0%
|
| Sysmiss | 1271 |