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Table 2 Results for two-sided Wilcoxon tests with r = 0.875 and r = 0.5.

From: Robustness of the inference of human population structure: A comparison of X-chromosomal and autosomal microsatellites

Sample

Number of regions

Number of populations

P-value for two-sided Wilcoxon test with H0:W X = W aut (r= 0.875, z = 0.143)

P-value for two-sided Wilcoxon test with H0: W X = 3W aut /(4-W aut ) (r= 0.5, z = 1)

Value of rthat produces highest P-value

World

1

52

5.43 × 10-5

0.05

0.08

World

5

52

1.01 × 10-3

0.16

0.18

World

7

52

2.42 × 10-4

0.09

0.12

World-B97

5

14

9.04 × 10-3

0.49

0.35

Africa

1

6

4.44 × 10-6

7.69 × 10-4

 

Eurasia

1

21

7.72 × 10-10

2.53 × 10-7

 

Eurasia

3

21

3.63 × 10-9

1.22 × 10-6

 

   Europe

1

8

1.15 × 10-6

5.49 × 10-5

 

   Middle East

1

4

6.08 × 10-3

0.16

 

   Central/South Asia

1

9

5.47 × 10-10

3.60 × 10-8

 

East Asia

1

18

2.43 × 10-10

1.19 × 10-8

 

Oceania

1

2

0.16

0.54

0.16

America

1

5

0.26

0.50

0.66

  1. For 11 of the 13 datasets, the observed within-population variance components on the autosomes are significantly different (P < 0.05) from those observed using X-linked markers. For seven of the 13 groupings, the observed differences can be explained by accounting for the smaller effective population size of X chromosomes compared with autosomes (r = 0.5). For six regions where a value of r is not given in the rightmost column, no value of r produces a high P-value.