| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 621 |
51.8%
|
| 1 | Just once or twice | 143 |
11.9%
|
| 2 | Several times | 216 |
18%
|
| 3 | Many times | 89 |
7.4%
|
| 4 | Always | 116 |
9.7%
|
| 8 | Refused | 0 |
0%
|
| 9 | Don't know | 14 |
1.2%
|