| Value | Category | Cases | |
|---|---|---|---|
| 1 | 5 or more days per week | 13 |
4.8%
|
| 2 | 1-4 days per week | 29 |
10.7%
|
| 3 | 1-3 days per month | 137 |
50.4%
|
| 4 | Less than once a month | 93 |
34.2%
|
| Sysmiss | 1159 |