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Table 1 Clinical and demographic characteristics of cases and controls

From: Association of single nucleotide polymorphisms (SNPs) with gastric cancer susceptibility and prognosis in population in Wuwei, Gansu, China

Variables   Case (N = 303) Control (N = 200) P
Age Mean 59 55 0.7079
Range 30–79 42–67  
Gender Male 223 (73.6%) 99(49.5%) 5e−14
Female 59 (19.47%) 101(50.5%)  
Unknown 21 (6.93%) 0  
Family history of cancer YES 33 (10.89%)  
NO 270(89.11%)  
Serum CEA Mean 21.44  
Serum CA199 Mean 22.87  
  1. P value was calculated with chi-square test