| Value | Category | Cases | |
|---|---|---|---|
| 1 | never | 119 |
6.9%
|
| 2 | once a year or less frequent | 198 |
11.5%
|
| 3 | two or three times a year | 249 |
14.4%
|
| 4 | monthly or more often | 1159 |
67.2%
|
| Sysmiss | 1414 |