| Value | Category | Cases | |
|---|---|---|---|
| 0 | Never | 4433 |
73%
|
| 1 | Once | 1209 |
19.9%
|
| 2 | 2-4 times | 340 |
5.6%
|
| 3 | 5-9 times | 52 |
0.9%
|
| 4 | About once a month on average | 25 |
0.4%
|
| 5 | About twice a month on average | 6 |
0.1%
|
| 6 | About once a week on average | 2 |
0%
|
| 7 | More than once a week | 4 |
0.1%
|
| 2147483622 | Don't know | 0 |
0%
|
| 2147483623 | Refused to respond | 0 |
0%
|
| 11 | .B | 19 | |
| Sysmiss | 2 |