| Value | Category | Cases | |
|---|---|---|---|
| -9 | don't know | 0 |
0%
|
| -8 | does not apply | 0 |
0%
|
| -7 | refused to answer | 1 |
0%
|
| 0 | never | 4099 |
99.5%
|
| 1 | a few times | 15 |
0.4%
|
| 2 | often | 5 |
0.1%
|
| 3 | almost always | 1 |
0%
|
| 4 | once | 0 |
0%
|