Figure 3. Subgroup analysis of the Hp+ infection ratio based on WBC count quartiles. The incidence of Helicobacter pylori infection was stratified by (A) gender, (B) age, (C) BMI and (D) SBP. BMI, body mass index; Hp+, Helicobacter pylori-positive; SBP, systolic blood pressure; WBC, white blood cell.