| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 0 |
0%
|
| -96 | Other | 0 |
0%
|
| 1 | One time only | 8 |
66.7%
|
| 2 | Once a month | 0 |
0%
|
| 3 | Several times a month | 0 |
0%
|
| 4 | Twice a year | 0 |
0%
|
| 5 | Ongoing | 4 |
33.3%
|
| Sysmiss | 198 |