| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 1 |
3.3%
|
| 1 | Never or do not compare | 9 |
30%
|
| 2 | Once a year or less frequent | 4 |
13.3%
|
| 3 | Two or three times a year | 8 |
26.7%
|
| 4 | Monthly or more often | 8 |
26.7%
|
| Sysmiss | 331 |