| Value | Category | Cases | |
|---|---|---|---|
| -999 | Don't know | 0 |
0%
|
| -888 | Refuse to answer | 0 |
0%
|
| -777 | Not applicable (never) | 0 |
0%
|
| -666 | Other (please specify) | 4 |
0.5%
|
| 1 | Once per week | 56 |
7.3%
|
| 2 | Several times per week | 16 |
2.1%
|
| 3 | Once per month | 39 |
5.1%
|
| 4 | Several times per month | 36 |
4.7%
|
| 5 | Once per year | 74 |
9.6%
|
| 6 | Irregularly | 542 |
70.7%
|
| 11 | .N | 27 | |
| Sysmiss | 21830 |