Regarding vasopressor exposure, vasopressor dependence index (VDI; see Section 2) decreased as early as 3 days of the sepsis (Table 4), which potentially contributed to a higher proportion of patients recovering from sepsis in the first 5 days of treatment (11% in the EPO group (from n = 45 as of day 1 to n = 40 as of day 5) vs. 6.3% in the non-EPO group (from n = 64 as of day 1 to n = 60 as of day 5) (Table 4). Here, EPO is linked to Sepsis.