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Table 3 Relationship between anemia and H. pylori status according to age and CCI score

From: Association of active Helicobacter pylori infection and anemia in elderly males

characteristic Number of cases Anemia prevalence n (%) Difference (95% CI) P value
Age group 65–74 years
H. pylori positive 85 5 (5.9) 3.3 (−2.3 to 8.9) 0.202
H. pylori negative 154 4 (2.6)   
75–84 years
H. pylori positive 59 3 (5.1) 3.1 (−3.1 to 9.4) 0.266
H. pylori negative 103 2 (1.9)   
≥ 85 years
H. pylori positive 84 4 (4.8) 2.9 (−2.1 to 7.9) 0.196
H. pylori negative 161 3 (1.9)   
CCI score ≤ 2
H. pylori positive 170 6 (3.5) 1.0 (−2.3 to 4.4) 0.569
H. pylori negative 279 7 (2.5)   
> 2
H. pylori positive 58 6 (10.3) 8.9 (0.8 to 17.0) 0.009
H. pylori negative 139 2 (1.4)