| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Less than once a year | 1278 |
94.7%
|
| 1 | At least once a year | 27 |
2%
|
| 2 | At least every 6 months | 20 |
1.5%
|
| 3 | At least every 3 months | 4 |
0.3%
|
| 4 | At least once a month | 11 |
0.8%
|
| 9 | Don't know | 10 |
0.7%
|
| 998 | Refused | 0 |
0%
|