| Value | Category | Cases | |
|---|---|---|---|
| 0 | Never | 20 |
1.6%
|
| 1 | Rarely (once or twice a month) | 75 |
6%
|
| 2 | Sometimes (three or four times a month) | 104 |
8.4%
|
| 3 | Often (more than 6 times per month) | 565 |
45.5%
|
| 4 | Always (every day) | 477 |
38.4%
|
| Sysmiss | 2 |