| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 0 |
0%
|
| -96 | Other | 0 |
0%
|
| 1 | One time only | 6 |
3%
|
| 2 | Once a month | 72 |
36%
|
| 3 | Several times a month | 1 |
0.5%
|
| 4 | Twice a year | 9 |
4.5%
|
| 5 | Ongoing | 112 |
56%
|
| Sysmiss | 10 |