| Value | Category | Cases | |
|---|---|---|---|
| 1 | NEVER | 36179 |
59.5%
|
| 2 | SOMETIMES | 18008 |
29.6%
|
| 3 | OFTEN | 6618 |
10.9%
|
| 9 | OMITTED | 0 |
0%
|
| Sysmiss | 591 |