| Value | Category | Cases | |
|---|---|---|---|
| 1 | Rarely (Once or Twice in 4 weeks) | 14169 |
48.5%
|
| 2 | Sometimes (Three to Ten times in 4 weeks) | 10528 |
36.1%
|
| 3 | Often (More than ten times in 4 weeks) | 4360 |
14.9%
|
| 4 | Never | 134 |
0.5%
|
| Sysmiss | 65978 |