| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 383 |
16%
|
| 1 | Once or twice | 350 |
14.6%
|
| 2 | Several times | 328 |
13.7%
|
| 3 | Many times | 162 |
6.8%
|
| 7 | Not applicable/Saw no problems | 1141 |
47.5%
|
| 9 | Don't know | 36 |
1.5%
|
| 998 | Refused | 0 |
0%
|