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H. pylori-CagA sero-positivity in CRC cases and controls in all cohorts excluding the WHI by year of birth category and stratified by A) Race (whites n=1,908, African American n=1,023); B) Race and sex (female/white n=1,135, female/African American n=571, male/white n=773, male/African American n=452) C) Race and education (≤HS/white n=703, ≤HS/African American n=583, >HS/white n=1,205, >HS/African American n=440)
