Table 3.

Eigen values, variances, and cumulative variances for the principal components (PCs) of 13 pelvic measurements summarized in Table 2

Principal component	Eigenvalue	Variance	Cumulative variance
PC1	9.39	72.19	72.19
PC2	1.15	8.86	81.05
PC3	0.65	4.97	86.02
PC4	0.52	4.00	90.02
PC5	0.34	2.65	92.67
PC6	0.29	2.21	94.88
PC7	0.19	1.47	96.35
PC8	0.18	1.38	97.73
PC9	0.10	0.78	98.50
PC10	0.09	0.72	99.22
PC11	0.05	0.37	99.59
PC12	0.04	0.34	99.93
PC13	0.01	0.07	100