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. Author manuscript; available in PMC: 2015 Jul 18.
Published in final edited form as: J Biomech. 2014 Apr 18;47(10):2452–2459. doi: 10.1016/j.jbiomech.2014.04.014

Table 2.

Dot products between full and reduced model PCs. PC 1 does not change between the full and reduced models, indicating that PC 1’s definition is not distorted by any outlier disc shapes. The remaining PCs are somewhat sensitive to the influence of particular discs.

Excluded Disc PC 1 PC 2 PC 3 PC 4
1 1.00 1.00 0.99 0.72
2 1.00 0.95 0.83 0.87
3 1.00 1.00 1.00 0.99
4 1.00 1.00 1.00 0.99
5 0.98 0.41 0.42 0.71
6 1.00 0.07 0.05 0.73
7 1.00 0.96 0.87 0.94
8 1.00 0.99 0.99 0.90
9 1.00 1.00 1.00 1.00
10 1.00 0.98 0.32 0.36
11 1.00 1.00 0.96 0.93
12 1.00 1.00 0.99 0.99
13 1.00 0.99 0.99 0.93
mean 1.00 0.87 0.80 0.85
s.d. 0.01 0.29 0.32 0.18