Table 2.

Principal component analysis.

Component	Eigenvalue	Difference	Proportion	Cumulative
Comp1	7.188	5.356	0.7188	0.7188
Comp2	1.831	1.294	0.1831	0.9019
Comp3	.5369	.3416	0.0537	0.9556
Comp4	.1953	.1025	0.0195	0.9752
Comp5	.0928	.0142	0.0093	0.9845
Comp6	.0786	.0471	0.0079	0.9923
Comp7	.0314	.0045	0.0031	0.9955
Comp8	.0269	.0175	0.0027	0.9982
Comp9	.0094	.0006	0.0009	0.9991
Comp10	.0087	.	0.0009	1.0000