Table 2.

Correlation coefficients between variables (R²)

	Average GAGs content (μg/mm3)	Average GAGs/cell (μg/cell)	Pfirrmann Degeneration Scale	Disc Height (mm)	Age	Total mobility (m4/N-s)	Bone mobility (m4/N-s)	Cartilage mobility (m4/N-s)	Porosity	Cartilage thickness (mm)
Average cell density (cells/mm3)	0.10* p<0.02	0.19** p<0.002	0.24* p<0.014	0.15* p=.005	0.03 p=0.20	0.01 p=0.44	0.06 p=0.1	0.012 p=0.45	0.01 p=0.54	0.01 p=0.52
Average GAGs content (μg/mm3)		0.22*** p<0.001	0.52*** p<0.0001	0.20*** p<0.001	0.83*** p<0.0001	0.05 p=0.16	0.16** p=0.004	0.05 p=0.15	0.20** p<0.002	0.07 p=0.07
Average GAGs/cell (μg/cell)			0.24*** p<0.0001	0.17** p<0.01	0.14** p<0.01	0.012 p=0.49	0.001 p=0.84	0.05 p=0.31	0.05 p=0.04	0.05 p=0.12
Pfirrmann Degeneration Scale				0.57*** p<0.0001	0.31** p=0.002	0.04 p=0.80	0.066 p=0.53	0.03 p=0.90	0.22** p<0.004	0.01 p=0.38
Disc Height (mm)					0.06 p=0.08	0.001 p=0.90	0.003 p=0.71	0.01 p=0.54	0.01 p=0.65	0.04 p=0.15
Age						0.16** p<0.01	0.10* p=0.03	0.06 p=0.09	0.13** p<0.01	0.08* p=0.03
Total mobility (m4/N-s)							0.08 p=0.06	0.96** p<0.0001	0.09* p=0.05	0.05 p=0.13
Bone mobility (m4/N-s)								0.05 p=0.13	0.23*** p<0.001	0.014 p=0.41
Cartilage mobility (m4/N-s)									0.09* p=0.04	0.01 p=0.58
Porosity										0.05 p=0.13

Significance of correlation

^*p<0.05,

^**p<0.01,

^***p<0.001