| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 1 | Annually | 34 |
16.7%
|
| 2 | Biannually/Every six months | 27 |
13.3%
|
| 3 | Quarterly | 37 |
18.2%
|
| 4 | Monthly | 80 |
39.4%
|
| 5 | Weekly | 9 |
4.4%
|
| 6 | Daily | 15 |
7.4%
|
| 7 | Hourly | 1 |
0.5%
|
| 8 | More than once in an hour | 0 |
0%
|
| Sysmiss | 226 |