| Value | Category | Cases | |
|---|---|---|---|
| -9 | don't know | 0 |
0%
|
| -8 | does not apply | 0 |
0%
|
| -7 | refused to answer | 0 |
0%
|
| 0 | none | 570 |
75.4%
|
| 1 | 163 |
21.6%
|
|
| 2 | 15 |
2%
|
|
| 3 | 6 |
0.8%
|
|
| 4 | 1 |
0.1%
|
|
| 7 | 1 |
0.1%
|