Table 2 Significance of principal componentsa

From: Using ancestry-informative markers to identify fine structure across 15 populations of European origin

Principal component

% Variance explained

Tracy–Widom statistic

P-value

1

0.14

1333.1

<1E−300

2

0.09

603.3

<1E−300

3

0.07

294.9

<1E−300

4

0.06

121.2

<1E−300

5

0.05

100.9

1.40E−295

6

0.05

43.7

9.79E−86

7

0.05

10.9

3.20E−12

8

0.05

10.0

5.08E−11

9

0.05

10.2

3.24E−11

10

0.05

6.9

5.30E−07

  1. The Tracy–Widom statistic is calculated using the smartpca software package.15
  2. aProportion of variance explained by the top 10 principal components.