| Value | Category | Cases | |
|---|---|---|---|
| 1 | 1. Per week | 3 |
8.6%
|
| 2 | 2. Per 2 weeks | 1 |
2.9%
|
| 3 | 3. Per month | 25 |
71.4%
|
| 4 | 4.Per 2 months | 2 |
5.7%
|
| 5 | 4 |
11.4%
|
|
| Sysmiss | 6546 |