| Value | Category | Cases | |
|---|---|---|---|
| 1 | NEVER | 6301 |
10.4%
|
| 2 | SOMETIMES | 43658 |
71.8%
|
| 3 | OFTEN | 10846 |
17.8%
|
| 9 | OMITTED | 0 |
0%
|
| Sysmiss | 591 |