| Value | Category | Cases | |
|---|---|---|---|
| 0 | 1 |
0%
|
|
| 1 | Yes | 15304 |
47.3%
|
| 2 | No | 16995 |
52.5%
|
| 9 | NS/blank | 56 |
0.2%
|
| Sysmiss | 3603 |