| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Never | 2104 |
86.5%
|
| 1 | Less than once a year | 146 |
6%
|
| 2 | At least once a year | 87 |
3.6%
|
| 3 | At least every 6 months | 41 |
1.7%
|
| 4 | At least every 3 months | 37 |
1.5%
|
| 5 | At least once a month | 0 |
0%
|
| 9 | Don't know | 16 |
0.7%
|
| 998 | Refused | 0 |
0%
|