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Table 3 Associations between anaemia at age 6.5 years and H. pylori infection at the age of three, 5, and 6.5 years, Butajira birth cohort study, Ethiopia

From: Effect of early and current Helicobacter pylori infection on the risk of anaemia in 6.5-year-old Ethiopian children

  Anaemia at age 6.5 yearsa
Variables N Yes N (%) No N (%) Crude OR (95 % CI) P-value Adjusted ORc (95 % CI) P-value
Exposure to H. pylori at age 3        
No 300 102 (34.0) 198 (66.0) 1   1  
Yes 212 77 (36.3) 135 (67.7) 1.12 (0.76-1.60) 0.58 1.16 (0.79-1.71) 0.44
Exposure to H. pylori at age 5        
No 406 124 (30.5) 282 (69.5) 1   1  
Yes 323 128 (39.6) 195 (60.4) 1.49 (1.09-2.02) 0.01 1.52 (1.11-2.08) 0.01
Exposure to H. pylori at age 6.5        
No 666 230 (34.5) 436 (65.5) 1   1  
Yes 73 27 (37.0) 46 (63.0) 1.11 (0.67-1.83) 0.67 1.15 (0.69-1.93) 0.59
Exposure to H. pylori up to age 6.5 b        
Never infected 309 88 (28.5) 221 (71.5) 1   1  
Infected at any age up to age 6.5 430 169 (39.3) 261 (60.7) 1.62 (1.19-2.23) 0.01 1.68 (1.22-2.32) 0.01
  1. aAanemia was defined according to WHO haemoglobin cutoffs: < 11.5 g/dL for children 5–11 years
  2. bH pylori infection at any age from 3 to 6.5 years
  3. cAdjusted for, child’s gender, area of residence, maternal education, history of vaccination at 2 months, vitamin A supplementation at 1 year, sanitary condition, source of water and child’s height at age 6.5