| Value | Category | Cases | |
|---|---|---|---|
| 1 | none | 4 |
0.2%
|
| 2 | oneORless | 161 |
7.5%
|
| 3 | threeOrmore | 739 |
34.4%
|
| 4 | twoORmore | 1245 |
57.9%
|
| Missing value | 106 |