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Table 1 Demographic variables for patients with gastric cancer and the control group

From: Effect of genetic ancestry to the risk of susceptibility to gastric cancer in a mixed population of the Brazilian Amazon

Variable Case Control P
Age, yearsa 52.81 ± 18.89 46.80 ± 24.48 < 0.001
Sex (women/men) 34/103 156/106 < 0.001
Genetic ancestryb
 European ancestry 0.415 ± 0.143 0.466 ± 0.158 0.001
 African ancestry 0.259 ± 0.140 0.232 ± 0.117 0.089
 Amerindian ancestry 0.326 ± 0.142 0.302 ± 0.137 0.079
  1. aValues are as expressed as mean (± SD = standard deviation). Significance determined by Student’s t-test
  2. bValues are as expressed as mean ± SD. Significance determined by Mann–Whitney test