| Value | Category | Cases | |
|---|---|---|---|
| 1 | Rarely (Once or Twice in 4 weeks) | 2412 |
48.9%
|
| 2 | Sometimes (Three to Ten times in 4 weeks) | 1760 |
35.7%
|
| 3 | Often (More than ten times in 4 weeks) | 742 |
15%
|
| 4 | Never | 22 |
0.4%
|
| Sysmiss | 10890 |