| Value | Category | Cases | |
|---|---|---|---|
| 1 | Rarely (Once or Twice in 4 weeks) | 16612 |
52.5%
|
| 2 | Sometimes (Three to Ten times in 4 weeks) | 12125 |
38.3%
|
| 3 | Often (More than ten times in 4 weeks) | 2764 |
8.7%
|
| 4 | Never | 140 |
0.4%
|
| Sysmiss | 63528 |