| Value | Category | Cases | |
|---|---|---|---|
| 0 | Never | 428 |
34.6%
|
| 1 | Rarely (once or twice a month) | 139 |
11.2%
|
| 2 | Sometimes (three or four times a month) | 238 |
19.2%
|
| 3 | Often (more than 6 times per month) | 328 |
26.5%
|
| 4 | Always (every day) | 104 |
8.4%
|
| Sysmiss | 6 |