Skip to main content

Table 2 Correlation between S3 PCs and other SNP subset PCs.

From: Principal-component-based population structure adjustment in the North American Rheumatoid Arthritis Consortium data: impact of single-nucleotide polymorphism set and analysis method

PCA removing MHC and inversion on chromosome 8 (S3)b

Subset

PC3

PC4

PC5

PC6

PC7

PC8

PC9

PC10

S1

PC3, PC4

(0.32,0.66)

PC5, PC6

(0.55, 0.81)

PC5, PC6

(0.46, 0.27)

PC7

(0.92)

PC8, PC9, PC10

(0.35, 0.25, 0.37)

PC9

(0.20)

----

----

S2

PC3, PC4

(0.29, 0.72)

PC5

(0.98)

PC6

(0.98)

PC7

(0.98)

PC8

(0.99)

PC9

(0.98)

PC10

(0.96)

----

S4

PC3

(0.98)

PC4

(0.98)

----c

PC5

(0.92)

PC6

(0.85)

PC7, PC8

(0.61, 0.18)

PC7, PC8

(0.16, 0.58)

PC9

(0.66)

S5

PC3

(0.96)

PC4

(0.90)

----

----

----

----

----

----

S6

PC3

(0.92)

PC4

(0.83)

----

----

----

----

----

----

  1. aFor each SNP subset, the PCs correlated with the corresponding subset S3 PC with r2 > 0.15 are displayed, along with the r2 value.
  2. bPC1 and PC2 for each subset are correlated with S3 subset PC1 and PC2 (r2 > 0.98, r2 > 0.94), and are not shown.
  3. c---, No PC has correlation (r2 > 0.15) with the S3 subset PC.