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. Author manuscript; available in PMC: 2014 Jun 2.
Published in final edited form as: Am J Sports Med. 2012 Jun 15;40(8):1814–1823. doi: 10.1177/0363546512449321

Table A2.

Regression analysis of indices of cartilage health versus cartilage cellularity.

MFC & LT

Cellularity
[ 106 cells/cm3 ]
Gross Histopathology HE-μCT [ % ] Stiffness [ MPa ]
ρ2 p< m ρ2 p< m ρ2 p< m ρ2 p< m
Superficial 0.65 0.001 −0.18 0.60 0.001 −0.22 0.20 0.001 −0.11 0.16 0.01 0.20
Middle 0.41 0.01 −0.13 0.48 0.001 −0.23 0.14 0.01 −0.11 0.37 0.001 0.36
Deep 0.39 0.01 −0.12 0.47 0.001 −0.20 0.09 0.05 −0.10 0.38 0.001 0.44

Overall 0.49 0.001 −0.18 0.52 0.001 −0.27 0.15 0.01 −0.13 0.40 0.001 0.45
MFC

Cellularity
[ 106 cells/cm3 ]
Gross Histopathology HE-μCT [ % ] Stiffness [ MPa ]
ρ2 p< m ρ2 p< m ρ2 p< m ρ2 p< m
Superficial 0.53 0.01 −0.21 0.60 0.001 −0.28 0.10 0.08 0.16 0.01 0.11
Middle 0.45 0.05 −0.34 0.66 0.001 −0.56 0.06 0.20 0.37 0.001 0.20
Deep 0.41 0.05 −0.47 0.58 0.001 −0.73 0.05 0.25 0.38 0.001 0.33

Overall 0.52 0.01 −0.44 0.67 0.001 −0.66 0.08 0.13 0.20 0.001 0.26
LT

Cellularity
[ 106 cells/cm3 ]
Gross Histopathology HE-μCT [ % ] Stiffness [ MPa ]
ρ2 p< m ρ2 p< m ρ2 p< m ρ2 p< m
Superficial 0.73 0.001 −0.18 0.64 0.001 −0.18 0.30 0.01 −0.14 0.12 0.06
Middle 0.44 0.05 −0.13 0.45 0.05 −0.20 0.26 0.01 −0.15 0.26 0.01 0.34
Deep 0.29 0.11 0.31 0.10 0.14 0.05 −0.12 0.27 0.01 0.37

Overall 0.54 0.01 −0.17 0.47 0.01 −0.23 0.26 0.01 −0.17 0.30 0.01 0.42

Spearman rank (ρ2) and linear (R2) regression coefficients; significance (p); slope (m).