| Value | Category | Cases | |
|---|---|---|---|
| 0 | Never | 31 |
2.5%
|
| 1 | Rarely (once or twice a month) | 40 |
3.2%
|
| 2 | Sometimes (three or four times a month) | 195 |
15.7%
|
| 3 | Often (more than 6 times per month) | 472 |
38.1%
|
| 4 | Always (every day) | 502 |
40.5%
|
| Sysmiss | 3 |