| Value | Category | Cases | |
|---|---|---|---|
| 0 | No | 475 |
47.6%
|
| 1 | Yes, severe | 329 |
33%
|
| 2 | Yes, never severe | 194 |
19.4%
|
| 9 | Missing | 177 | |
| Sysmiss | 155657 |