Prevalence of Neutropenia in the U.S. Population: Age, Sex, Smoking Status, and Ethnic Differences

Background: Benign reductions in neutrophil counts may be more common at certain ages and in certain ethnic groups and may be affected by sex and smoking status. Objective: To determine differences in neutrophil counts in the U.S. population according to ethnicity, age, sex, and smoking status. Design: Population-based, cross-sectional study