| Value | Category | Cases | |
|---|---|---|---|
| 1 | Daily | 2 |
1.6%
|
| 2 | 5-6 days per week | 3 |
2.5%
|
| 3 | 1-4 days per week | 37 |
30.3%
|
| 4 | 1-3 days per month | 43 |
35.2%
|
| 5 | less than once a month | 37 |
30.3%
|
| Sysmiss | 613 |