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Table 2 The genotypic and allelic frequencies of the EGF polymorphism among control subjects by race/ethnicity

From: Genetic polymorphisms of epidermal growth factor in relation to risk of hepatocellular carcinoma: two case-control studies

Genetic polymorphism Non-Asians in Los Angeles, California Chinese in southern Guangxi, China
Non-Hispanic whites (n = 179) Blacks/Hispanics (n = 46) Han Chinese (n = 196) Zhuang/Yao Chinese (n = 49)
EGF 61A > G     
A/A 0.21 0.50 0.48 0.49
A/G 0.48 0.33 0.43 0.45
G/G 0.31 0.17 0.09 0.06
A 0.45 0.66 0.70 0.71
G 0.55 0.34 0.30 0.29
 2-sided P for HW† 0.81 0.07 0.72 0.48
2-sided P‡ 0.0003 0.84
  1. * Test for differences in genotypic frequencies between the four racial/ethnic groups.
  2. † Test for the Hardy-Weinberg linkage equilibrium within each racial/ethnic group.
  3. ‡ Test for differences in genotypic frequencies between the two racial/ethnic groups within a given study location.