Device | Melanin | Erythema | Red | Green | Blue |
INVOS | −0.4900** | −0.4446** | 0.5044** | 0.5079** | 0.4971** |
EQUANOX | −0.1342 | −0.0645 | 0.1576 | 0.1406 | 0.1348 |
CASMED | −0.1376 | −0.1456* | 0.1329 | 0.1489* | 0.1323 |