| Value | Category | Cases | |
|---|---|---|---|
| 1 | Daily | 2 |
7.7%
|
| 2 | Weekly | 1 |
3.8%
|
| 3 | Twice a month | 1 |
3.8%
|
| 4 | Monthly | 3 |
11.5%
|
| 5 | Less often | 19 |
73.1%
|
| 99 | Not specified | 0 |
0%
|
| Sysmiss | 3972 |