| Value | Category | Cases | |
|---|---|---|---|
| 0 | Never | 6 |
0.3%
|
| 1 | Rarely (once or twice in the past 30 days) | 221 |
10.5%
|
| 2 | Sometimes (three to ten times in the past 30 days) | 815 |
38.6%
|
| 3 | Often (more than ten times in the past 30 days) | 919 |
43.5%
|
| 4 | Always (every day) | 151 |
7.1%
|
| Sysmiss | 2 |