| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 1 |
0.6%
|
| -96 | Other | 12 |
7.1%
|
| 1 | One time only | 34 |
20%
|
| 2 | Once a month | 0 |
0%
|
| 3 | Several times a month | 2 |
1.2%
|
| 4 | Twice a year | 9 |
5.3%
|
| 5 | Ongoing | 112 |
65.9%
|
| Sysmiss | 40 |