| Value | Category | Cases | |
|---|---|---|---|
| 0 | Months there is no specific period | 7 |
30.4%
|
| 4 | 1 |
4.3%
|
|
| 5 | 1 |
4.3%
|
|
| 12 | 3 |
13%
|
|
| 24 | 3 |
13%
|
|
| 36 | 5 |
21.7%
|
|
| 60 | 2 |
8.7%
|
|
| 120 | 1 |
4.3%
|
|
| Sysmiss | 10893 |