| Value | Category | Cases | |
|---|---|---|---|
| 1 | Blood taken | 2890 |
86.4%
|
| 2 | Not present | 73 |
2.2%
|
| 3 | Refused | 319 |
9.5%
|
| 4 | Sample not tested/lost | 20 |
0.6%
|
| 5 | Not enough DBS to complete protocol | 0 |
0%
|
| 6 | Other | 43 |
1.3%
|
| Sysmiss | 5712 |