| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 0 |
0%
|
| -96 | Other | 3 |
1.6%
|
| 1 | One time only | 34 |
18.6%
|
| 2 | Once a month | 4 |
2.2%
|
| 3 | Several times a month | 4 |
2.2%
|
| 4 | Twice a year | 19 |
10.4%
|
| 5 | Ongoing | 119 |
65%
|
| Sysmiss | 27 |