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Table 2 Frequency of Detection of K111 in DNA from individuals of different ethnic groups

From: Structural variation of centromeric endogenous retroviruses in human populations and their impact on cutaneous T-cell lymphoma, Sézary syndrome, and HIV infection

Ethnicity No. tested −/− K111 Frequency of −/− K111 (%) X 2 p value
Caucasian 180 29 16.11   
 English 96 13 13.54   
 American 64 12 18.75   
 Italian 10 3 30   
 Ashkenazi 10 1 10   
African total 127 3 2.36 14.1415 0.000169*
 South Sahara 9 0 0 1.65 ns
 Pygmy 5 0 0 0.921 ns
 Nigerian 113 3 2.65 12.1039 0.000503*
Asian total 54 12 22.22 1.2288 ns
 Asian (MACS) 25 6 24 1.0872 ns
 Chinese 10 2 20 0.0506 ns
 Japanese 10 1 10 0.3408 ns
 Southeast Russia 9 3 33.3 1.933 ns
Amerindian (MACS) 21 3 14.3 0.0255 ns
African American 39 3 7.6 1.82 ns
  1. Stars indicate significantly decreased detection of the −/− K111 genotype in Africans, including Nigerian individuals, as compared with the Caucasian population. p values were calculated using the X2 test