Table 10. PLS-DA Models for Calibration by the Sex of Dyed Hair (DH) and Undyed Hair (UH) FT-IR Spectra^a.

DH FT-IR		actual sex		UH FT-IR	actual sex
predicted sex	accuracy	female (n = 60)	male (n = 60)	accuracy	female (n = 60)	male (n = 60)
female	91.7%	55	4	91.7%	55	2
male	93.3%	5	56	96.7%	5	58
MCC = 0.850				MCC = 0.884

^aMatthew’s correlation coefficient (MCC) indicates the level of reliability between binary classifications.