| Value | Category | Cases | |
|---|---|---|---|
| 1 | 0 | 1 |
0.2%
|
| 2 | O1 | 6 |
1.4%
|
| 3 | O2 | 137 |
32.2%
|
| 4 | O3 | 57 |
13.4%
|
| Missing value | 224 |
52.7%
|