| Value | Category | Cases | |
|---|---|---|---|
| 1 | one month or less | 244 |
81.3%
|
| 2 | 2 months | 22 |
7.3%
|
| 3 | 3 months | 12 |
4%
|
| 4 | 4 months | 7 |
2.3%
|
| 5 | 5 months | 1 |
0.3%
|
| 6 | 6 months | 4 |
1.3%
|
| 7 | 7 months and more | 10 |
3.3%
|
| Sysmiss | 1 |