Table 4.

Distribution of PC1-Correlated SNPs Found in Clusters and in Selected Regions

Continent	Number of Clusters	Percent SNPs in Clustersa	Percent SNPs in Selected Regionsb	Percent Clustered SNPs in Selected Regionsc	Enrichment p Valued
Africa	61	7.0	8.9	18.0	2.2 × 10−16
America	120	35.2	6.9	8.2	8.8 × 10−3
C/S Asia	83	18.7	13.3	30.0	2.2 × 10−16
East Asia	95	19.1	8.7	14.0	3.0 × 10−13
Middle East	29	11.1	15.9	42.0	2.2 × 10−16
Oceania	57	28.8	6.8	8.9	1.1 × 10−2

^aDenotes the percentage of all PC1-correlated SNPs found in clusters.

^bDenotes the percentage of all PC1-correlated SNPs that are located in putatively selected regions of the genome (see text).

^cDenotes the percentage of all PC1-correlated SNPs that were found in clusters and also map to putatively selected regions.

^dP value resulting from a test of whether more PC1-correlated SNPs in clusters were also present in selected regions than expected by chance.