| Value | Category | Cases | Weighted | |
|---|---|---|---|---|
| 1 | Once | 1956 | 973 |
81.2%
|
| 2 | More than once | 445 | 226 |
18.8%
|
| 9 | 5 | 3 | ||
| Sysmiss | 1384 | 1167 |