| Value | Category | Cases | |
|---|---|---|---|
| 1 | Daily | 2 |
6.1%
|
| 2 | Weekly | 7 |
21.2%
|
| 3 | Monthly | 11 |
33.3%
|
| 4 | Quartely | 13 |
39.4%
|
| Sysmiss | 2650 |