Table 1.

The summary of regressions between Raman biomarkers and mechanical properties. The values inside brackets indicate the R² values between Raman biomarkers and porosity adjusted (adj.) mechanical properties. Porosity adjusted mechanical properties improved R² values for the strength and modulus only. Gray highlighted cells indicate p < 0.001, white cells indicate p<0.05, and blank cells are not significant, p>0.05.

	Raman Intensity Ratios

	Wet bone				Oven-dried bone				Oven-dried and ethanol treated bone

	I₃₂₂₀/I₂₉₄₉	I₃₃₂₅/I₂₉₄₉	I₃₄₅₃/I₂₉₄₉	I₃₅₈₄/I₂₉₄₉	I₃₂₂₀/I₂₉₄₉	I₃₃₂₅/I₂₉₄₉	I₃₄₅₃/I₂₉₄₉	I₃₅₈₄/I₂₉₄₉	I₃₂₂₀/I₂₉₄₉	I₃₃₂₅/I₂₉₄₉	I₃₄₅₃/I₂₉₄₉	I₃₅₈₄/I₂₉₄₉

Toughness	0.37	0.23	0.22		0.81	0.79	0.28		0.48	0.47	0.39	0.43
(Adj. Toughness)	(0.35)	(0.23)	(0.23)		(0.80)	(0.79)	(0.23)		(0.49)	(0.48)	(0.40)	(0.44)

Post-Yield Toughness(PYT)	0.32	0.17	0.18		0.65	0.73	0.18		0.44	0.48	0.40	0.47
(Adj. PYT)	(0.30)	(0.16)	(0.18)		(0.65)	(0.73)	(0.18)		(0.44)	(0.48)	(0.40)	(0.48)

Elastic modulus				0.39				−0.78
(Adj. Elastic modulus)				(0.48)				(−0.76)

Max. flexural strength	0.23	0.18	0.20	0.45	0.40	0.29	0.48	0.46				0.15
(Adj. Max. flexural strength)	(0.25)	(0.17)	(0.21)	(0.47)	(0.39)	(0.27)	(0.51)	(0.48)				(0.14)