| Value | Category | Cases | |
|---|---|---|---|
| 1 | Several times a week | 462 |
15.2%
|
| 2 | Once a week | 595 |
19.6%
|
| 3 | Once a fortnight | 361 |
11.9%
|
| 4 | About once a month | 330 |
10.8%
|
| 5 | Less often | 178 |
5.8%
|
| 6 | Never | 5 |
0.2%
|
| -6 | Follow up refusal | 1011 |
33.2%
|
| -2 | No answer | 55 |
1.8%
|
| -1 | Don't know | 46 |
1.5%
|