| Value | Category | Cases | |
|---|---|---|---|
| 1 | Daily | 4 |
0.7%
|
| 2 | 5-6 days per week | 3 |
0.5%
|
| 3 | 3-4 days per week | 14 |
2.5%
|
| 4 | 1-2 days per week | 48 |
8.5%
|
| 5 | 1-3 days per month | 107 |
18.8%
|
| 6 | Less than once a month | 377 |
66.4%
|
| 7 | Never | 15 |
2.6%
|
| Sysmiss | 3227 |