| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 927 |
77.3%
|
| 1 | Less than once a year | 49 |
4.1%
|
| 2 | At least once a year | 69 |
5.8%
|
| 3 | At least every 6 months | 43 |
3.6%
|
| 4 | At least every 3 months | 37 |
3.1%
|
| 5 | At least once a month | 68 |
5.7%
|
| 9 | Don't know | 7 |
0.6%
|