| Value | Category | Cases | |
|---|---|---|---|
| 1 | O1 | 420 |
30.2%
|
| 2 | O2 | 364 |
26.1%
|
| 3 | O3 | 18 |
1.3%
|
| 4 | O4 | 9 |
0.6%
|
| Missing value | 582 |
41.8%
|