Fig. 1From: There is no dose–response relationship between allogeneic blood transfusion and healthcare-associated infection: a retrospective cohort studyFlow chart of patient inclusion. A total of 257,984 inpatients were admitted to the hospital. After data collation and screening, finally 3079 inpatients with HAI and 212,259 inpatients without HAI were included. This study included 4 cohorts, including cohort-RBCs, cohort-FFPs, cohort-cryo and cohort-plateletsBack to article page