| Value | Category | Cases | |
|---|---|---|---|
| -97 | Don't know | 24 |
10%
|
| 1 | Gray | 0 | |
| 2 | White | 0 | |
| 3 | Pink | 1 |
0.4%
|
| 4 | Black | 214 |
89.5%
|
| a | Not applicable | 0 | |
| b | Don't know | 0 | |
| c | Refused to respond | 0 |