Table 5. PLS-DA Cross-Validation Results from the IR-Based Analysis of Four Colorants on Hair of Different Races/Ethnicities, Sexes, and Age Groups.

FT-IR (LV = 8)		actual colorant
predicted colorant	accuracy, %	PBA (n = 30)	PBU (n = 30)	SBA (n = 30)	SBU (n = 30)
PBA	100	30	2	0	0
PBU	90.0	0	27	0	0
SBA	96.7	0	1	29	0
SBU	100	0	0	1	30