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Table 2 5HTTLPR allele frequencies and genotypes by self-reported ethnic group.

From: Gene × environment interactions for ADHD: synergistic effect of 5HTTLPR genotype and youth appraisals of inter-parental conflict

  La Lg Short
Caucasian (N = 229) .49 .06 .45
African-American (N = 42)* .61 .19 .20
Latino (N = 15) .33 .07 .60
Other (n = 18) .28 .17 .55
Total .48 .09 .43
  1. Note. *La and Lg allele frequency significantly greater in African-American participants compared to non-African American participants, (La, p = .048; Lg, p = .007).