| Value | Category | Cases | |
|---|---|---|---|
| 1 | Daily | 1 |
0.4%
|
| 2 | Weekly | 0 |
0%
|
| 3 | Twice a month | 5 |
2.2%
|
| 4 | Monthly | 63 |
27.4%
|
| 5 | Less often | 161 |
70%
|
| 99 | Not specified | 0 |
0%
|
| Sysmiss | 3768 |