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Table 4 Serological testing for anti- H. pylori (HP) and anti-Cag-A in patients with polyps

From: Gastric Helicobacter pylori infection associates with an increased risk of colorectal polyps in African Americans

H. pylori status Number of patients Polyps OR (95% CI)*
HP Negative 70 33 (47%) 1
HP Positive    
 HP Ab + & Cag Ab + 60 33 (55%) 1.37 (0.65-2.90)
 HP Ab + & Cag Ab – 25 12 (48%) 1.03 (0.37-2.85)
 HP Ab - & Cag Ab + 8 3 (38%) 0.67 (0.10-3.79)
Total 163 81 (50%)  
  1. *Unadjusted.