Table 2. Non-parametric linear regression between histological grades, GAG content (μg (mg DW)^–1), total collagen content (HYP (μg (mg DW)^–1)), MRI T2* and extracted MCR-ALS matrix parameters related to proteoglycans in the IVD matrix for NP.

NP	Histology	GAG (μg (mg DW)–1)	MRI T2*	HYP (μg (mg DW)–1)
Collagen type II	—	P = 0.0001	P = 0.0017	P = 0.0127
Collagen type I	—	P = 0.0022	P = 0.0067	P = 0.0204