| Value | Category | Cases | |
|---|---|---|---|
| 0 | 5 |
0.1%
|
|
| 1 | Week | 289 |
5.4%
|
| 2 | Month | 5035 |
94.4%
|
| 9 | Not stated | 3 |
0.1%
|
| Sysmiss | 41867 |