| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 1 | Annually | 24 |
15.8%
|
| 2 | Biannually/Every six months | 13 |
8.6%
|
| 3 | Quarterly | 42 |
27.6%
|
| 4 | Monthly | 64 |
42.1%
|
| 5 | Weekly | 3 |
2%
|
| 6 | Daily | 6 |
3.9%
|
| 7 | Hourly | 0 |
0%
|
| 8 | More than once in an hour | 0 |
0%
|
| Sysmiss | 88 |