| Value | Category | Cases | |
|---|---|---|---|
| 1 | never | 378 |
16.1%
|
| 2 | once or twice | 742 |
31.7%
|
| 3 | more often | 632 |
27%
|
| 9 | not applicable | 526 |
22.5%
|
| 9999995 | missing:impute | 63 |
2.7%
|
| Sysmiss | 29 |