Table 6. Collective PLS-DA Models for All SERS and FT-IR Spectra, Calibrated by Race/Ethnicity for PBA (A), PBU (B), SBA (C), and SBU (D).
| SERS | actual race/ethnicity |
FT-IR | actual race/ethnicity |
||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| predicted race/ethnicity | accuracy, % | Asian (n = 100) | Caucasian (n = 150) | Hispanic (n = 100) | Indian (n = 150) | accuracy,% | Asian (n = 6) | Caucasian (n = 9) | Hispanic (n = 6) | Indian (n = 9) | |
| A | Asian | 100 | 100 | 1 | 0 | 1 | 50.0 | 3 | 1 | 2 | 0 |
| Caucasian | 99.3 | 0 | 149 | 0 | 2 | 33.3 | 1 | 3 | 2 | 3 | |
| Hispanic | 100 | 0 | 0 | 100 | 0 | 0 | 0 | 0 | 0 | 1 | |
| Indian | 98.0 | 0 | 0 | 0 | 147 | 55.6 | 2 | 5 | 2 | 5 | |
| B | Asian | 100 | 100 | 0 | 0 | 0 | 16.7 | 1 | 1 | 3 | 0 |
| Caucasian | 98.7 | 0 | 148 | 0 | 0 | 77.8 | 0 | 7 | 0 | 6 | |
| Hispanic | 99.0 | 0 | 1 | 99 | 3 | 50.0 | 1 | 0 | 3 | 0 | |
| Indian | 98.0 | 0 | 1 | 1 | 147 | 33.3 | 4 | 1 | 0 | 3 | |
| C | Asian | 100 | 100 | 0 | 1 | 0 | 16.7 | 1 | 2 | 2 | 2 |
| Caucasian | 97.3 | 0 | 146 | 1 | 1 | 44.4 | 1 | 4 | 1 | 3 | |
| Hispanic | 98.0 | 0 | 0 | 98 | 3 | 50.0 | 3 | 1 | 3 | 0 | |
| Indian | 97.3 | 0 | 4 | 0 | 146 | 44.4 | 1 | 2 | 0 | 4 | |
| D | Asian | 89.0 | 89 | 0 | 3 | 9 | 16.7 | 1 | 1 | 1 | 2 |
| Caucasian | 100 | 0 | 150 | 0 | 0 | 55.6 | 0 | 5 | 3 | 4 | |
| Hispanic | 97.0 | 0 | 0 | 97 | 0 | 0 | 2 | 2 | 0 | 0 | |
| Indian | 94.0 | 11 | 0 | 0 | 141 | 33.3 | 3 | 1 | 2 | 3 | |