| Value | Category | Cases | |
|---|---|---|---|
| 1 | Never | 540 |
66.2%
|
| 2 | Only once | 64 |
7.8%
|
| 3 | Monthly | 72 |
8.8%
|
| 4 | Fortnightly | 14 |
1.7%
|
| 5 | Weekly or more often | 64 |
7.8%
|
| 6 | Rarely | 62 |
7.6%
|
| Sysmiss | 2189 |