| Value | Category | Cases | Weighted | |
|---|---|---|---|---|
| 0 | No specific period | 1 | 4777 |
8.7%
|
| 6 | 2 | 7381 |
13.4%
|
|
| 8 | 1 | 3159 |
5.8%
|
|
| 9 | 6 | 18357 |
33.4%
|
|
| 12 | 4 | 9770 |
17.8%
|
|
| 24 | 2 | 5160 |
9.4%
|
|
| 60 | 1 | 2860 |
5.2%
|
|
| 72 | 1 | 3432 |
6.3%
|
|
| Sysmiss | 10898 | 31713021 |