| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 85 |
7%
|
| 1 | Never or do not compare | 485 |
39.9%
|
| 2 | Once a year or less frequent | 255 |
21%
|
| 3 | Two or three times a year | 162 |
13.3%
|
| 4 | Monthly or more often | 228 |
18.8%
|
| Sysmiss | 1890 |