| Value | Category | Cases | |
|---|---|---|---|
| -9 | 3560 |
90.1%
|
|
| 0 | No | 232 |
5.9%
|
| 1 | Yes | 140 |
3.5%
|
| 3 | Not aware of OBA voucher | 16 |
0.4%
|
| 9 | Not applicable | 4 |
0.1%
|