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Table 1 Odds ratios (95% CI) for gastric cancer according to selected variables and their frequency distribution among 156 gastric cancer cases and 444 controls

From: A case–control study on the effect of Apolipoprotein E genotypes on gastric cancer risk and progression

  Cases Controls OR (95% CI) †
  n (%) n (%)  
Age (mean ± SD) 67.05±11.33 59.04±16.00  
Male gender 82 (53.2) 261 (58.8) 0.50 (0.30-0.83)
Alcohol drinkers    
 0-6 g/day 60 (40.5) 251 (57.6) 1*
 7-29 g/day 71 (48.0) 163 (37.4) 1.84 (1.10- 3.07)
 >= 30 g/day 17 (11.5) 22 (5.0) 3.29 (1.36- 7.98)
Smoking status    
 Never 78 (50.7) 238 (54.2) 1*
 Ever 76 (49.3) 201 (45.8) 1.51 (0.94- 2.45)
Pack-years of smoking    
 0 74 (51.7) 245 (57.0) 1*
 1-25 31 (21.7) 111 (25.8) 1.40 (0.78- 2.50)
 >25 38 (26.6) 74 (17.2) 1.95 (1.06- 3.60)
Fruit and vegetables intake   
 High‡ 41 (27.5) 116 (27.2) 1*
 Low 108 (72.5) 310 (72.8) 1.18 (0.70- 1.98)
Grilled meat    
 Low ^ 106 (75.7) 314 (81.1) 1*
 High 34 (24.3) 73 (18.9) 1.25 (0.72- 2.15)
Physical activity    
 Any 29 (18.6) 93 (20.9) 1*
 None 127 (81.4) 351 (79.1) 0.81 (0.45- 1.45)
Family history of cancer    
 No 87 (62.2) 291 (71.2) 1*
 Family history of gastric cancer 10 (7.1) 14 (3.4) 3.14 (1.17- 8.44)
 Family history of other cancer 43 (30.7) 104 (25.4) 1.09 (0.66- 1.81)
ApoE allele frequency    
 ε3 130 (85.5) 322 (80.1)  
 ε2 8 (5.3) 39 (9.7)  
 ε4 14 (9.2) 41 (10.2)  
  1. † OR adjusted by age, gender, alcohol consumption (as continuous variable), packyears of smoking, grilled meat consumption and familiy history of cancer.
  2. * reference category.
  3. ‡ at least three portions of fruit and vegetables per day.
  4. ^ less than four times/month.