| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 26 |
0.1%
|
| 0 | Never | 44220 |
85.7%
|
| 1 | Only once | 2789 |
5.4%
|
| 2 | A few times | 2822 |
5.5%
|
| 3 | Often | 1301 |
2.5%
|
| 9 | Don't know | 429 |
0.8%
|
| 998 | Refused | 0 |
0%
|