| Value | Category | Cases | |
|---|---|---|---|
| 1 | Several times a week | 161 |
5.3%
|
| 2 | Once a week | 219 |
7.2%
|
| 3 | Once a fortnight | 254 |
8.3%
|
| 4 | About once a month | 268 |
8.8%
|
| 5 | Less often | 470 |
15.4%
|
| 6 | Never | 136 |
4.5%
|
| -6 | Follow up refusal | 1011 |
33.2%
|
| -2 | No answer | 471 |
15.5%
|
| -1 | Don't know | 53 |
1.7%
|