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Table 2 Summary of Principle Components Analysis, Components and Factor Weights for normal, early OA, advanced OA (OA) and RA

From: Matrix metalloproteinase protein expression profiles cannot distinguish between normal and early osteoarthritic synovial fluid

A. PCA of Normal, Early OA, OA, and RA
PC1 3.44 43%   
PC2 1.53 19%   
PC3 1.09 14%   
PC4 0.76 10   
MMP PC1 PC2 PC3  
MMP 0.2704 0.5714 -o.2679  
MMP2 0.4037 -0.2209 -0.2829  
MMP3 0.3665 0.416 -0.2448  
MMP 7 0.2875 -0.1492 0.6697  
MMP8 0.4962 -0.1641 -0.0277  
MMP9 0.4130 0.0671 0.4098  
MMP12 0.0239 0.5104 0.3486  
MMP13 0.3599 -0.3706 -0.2225  
B. PCA of Normal and Early OA
Component Eigenvalue Proportion
PC1 20.7 26%   
PC2 1.97 25%   
PC3 1.51 19%   
PC4 1.09 14%   
PC5 0.49 6%   
MMP PC1 PC2 PC3 PC4
MMP1 -0.2668 0.5118 0.2046 0.2665
MMP2 -0.3357 0.5045 0.0452 0.0662
MMP3 0.1353 0.1077 0.6581 0.3545
MMP7 0.1996 0.4664 -0.1648 -.04650
MMP8 0.4399 0.2325 -0.2258 0.5606
MMP9 0.5954 0.0967 -0.2546 0.1539
MMP12 0.3143 0.3696 0.2386 -0.4688
MMP13 0.334 -0.2333 0.5685 -0.1580