| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 41 |
3.4%
|
| 0 | Never | 107 |
8.9%
|
| 1 | Once or twice | 14 |
1.2%
|
| 2 | Several times | 12 |
1%
|
| 3 | Many times | 6 |
0.5%
|
| 7 | Not applicable/Saw no problems | 1011 |
84.3%
|
| 9 | Don't know | 9 |
0.8%
|
| 998 | Refused | 0 |
0%
|