Comparison of methods for correcting population stratification in a genome-wide association study of rheumatoid arthritis: principal-component analysis versus multidimensional scaling

Table 1 Correlation between first eight principal components and first eight MDS dimensions

Top eight principal components	Top eight MDS dimensions
	dim1	dim2	dim3	dim4	dim5	dim6	dim7	dim8
evec1	0.998 ^a	0.01	-0.02	0.01	0.005	0.01	-0.002	-0.0004
evec2	0.00	0.98	0.17	0.03	-0.01	-0.01	0.01	0.002
evec3	-0.04	0.17	-0.96	-0.11	-0.01	0.01	0.01	-0.01
evec4	-0.02	0.00	-0.12	0.89	0.06	0.17	-0.07	-0.03
evec5	0.02	-0.01	-0.05	0.38	-0.20	-0.43	0.20	0.03
evec6	0.01	0.01	0.02	0.02	0.13	0.00	0.08	-0.17
evec7	-0.02	-0.001	-0.03	-0.01	0.17	-0.07	-0.17	0.31
evec8	0.02	-0.01	0.02	0.02	-0.26	-0.18	-0.32	0.06

ISSN: 1753-6561