| Value | Category | Cases | |
|---|---|---|---|
| 1 | Daily | 23 |
2.8%
|
| 2 | 5-6 days per week | 15 |
1.8%
|
| 3 | 3-4 days per week | 61 |
7.4%
|
| 4 | 1-2 days per week | 319 |
38.9%
|
| 5 | 1-3 days per month | 176 |
21.5%
|
| 6 | Less than once a month | 195 |
23.8%
|
| 7 | Never | 31 |
3.8%
|
| Sysmiss | 618 |