| Value | Category | Cases | |
|---|---|---|---|
| 1 | never | 162 |
20.6%
|
| 2 | once or twice | 390 |
49.6%
|
| 3 | more often | 234 |
29.8%
|
| 9 | not applicable | 0 |
0%
|
| 9999995 | missing:impute | 0 |
0%
|
| Sysmiss | 2831 |