Table 8.

(a) Correlation between fluorescence PCs and the extracted fluorophore properties; and (b) Correlation between reflectance PCs and the absorption and scattering properties. Correlation was considered significant if p < 0.01 and the correlation coefficient was shown in the table, otherwise a symbol Ø was shown indicating no significant correlation. The correlation coefficients marked with ** have a p-value of p < 1e-6.

(a)
	Collagen	NADH	Retinol	NADH + Retinol
340 nm PC1	0.83 **	0.38 (p<1e-3)	−0.94 **	−0.94 **
340 nm PC2	−0.31 (p<0.01)	0.64 **	Ø	Ø
360 nm PC1	0.84 **	0.31 (p<0.01)	−0.88 **	−0.92 **
360 nm PC2	Ø	0.68 **	−0.28 (p<0.01)	Ø
380 nm PC1	0.70 **	0.44 (p<1e-4)	−0.86 **	−0.80 **
380 nm PC2	Ø	0.62 **	Ø	Ø
400 nm PC1	Ø	0.74 **	−0.52 **	Ø
400 nm PC2	0.57**	0.31 (p<0.01)	−0.64**	−0.61**

(b)
	Mean μs′	β-carotene	Total Hb	% HbO2
Refl PC1	0.72 **	−0.55 **	Ø	−0.32 (p<0.01)
Refl PC2	Ø	0.48 **	−0.29 (p<0.01)	Ø