| Value | Category | Cases | |
|---|---|---|---|
| 1 | Daily | 7 |
10.8%
|
| 2 | 5-6 days per week | 5 |
7.7%
|
| 3 | 1-4 days per week | 4 |
6.2%
|
| 4 | 1-3 days per month | 13 |
20%
|
| 5 | less than once a month | 27 |
41.5%
|
| 88 | Refused | 9 |
13.8%
|
| Sysmiss | 3525 |