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Table 1 Baseline characteristics of the study population

From: Effect of RAGE gene polymorphisms and circulating sRAGE levels on susceptibility to gastric cancer: a case–control study

Characteristics Gastric cancer Controls P value
Total number 200 207  
Age (mean ± SD, years)a 54.43 ± 11.77 53.23 ± 4.335 0.170
BMI (mean  ±  SD, kg/m2)a 20.49 ± 3.11 22.37 ± 3.44 <0.001
Gender
 Male 131 (0.655) 97 (0.469) <0.001
 Female 69 (0.345) 110 (0.531)
Smoking status
 Yes 59 (0.295) 64 (0.309) 0.755
 No 141 (0.705) 143 (0.691)
Drinking status
 Yes 52 (0.260) 58 (0.280) 0.647
 No 148 (0.740) 149 (0.720)
Ethnicity
 Han 97 (0.485) 104 (0.502) 0.940
 Zhuang 91 (0.455) 91 (0.440)
 Other 12 (0.060) 12 (0.058)
CEA (median ± IQR, ng/ml)b 2.79 ± 3.53 2.20 ± 2.71 <0.001
CA199 (median ± IQR, ng/ml)b 9.94 ± 17.91 3.17 ± 7.64 <0.001
Family history of cancer
 Yes 14 (0.070) 4 (0.019) 0.013
 No 186 (0.930) 203 (0.981)
Tumor location
 Upper 185 (0.925)   
 Middle 6 (0.030)   
 Lower 9 (0.045)   
Differentiation
 Undifferentiated 20 (0.010)   
 Poor 145 (0.725)   
 Moderate 30 (0.150)   
 Well 5 (0.025)   
Clinical state
 I 26 (0.130)   
 II 35 (0.175)   
 III 85 (0.425)   
 IV 54 (0.270)   
  1. SD standard deviation, IQR interquartile range, NA not available
  2. aStudent’s t-test
  3. bMann–Whitney U test