| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 1 | Annually | 2 |
5.6%
|
| 2 | Biannually/Every six months | 6 |
16.7%
|
| 3 | Quarterly | 8 |
22.2%
|
| 4 | Monthly | 11 |
30.6%
|
| 5 | Weekly | 5 |
13.9%
|
| 6 | Daily | 4 |
11.1%
|
| 7 | Hourly | 0 |
0%
|
| 8 | More than once in an hour | 0 |
0%
|
| Sysmiss | 496 |