^a)There were 4,164 donors who donated both whole blood and apheresis plasma. ^b)Three donors who donated both whole blood and apheresis plasma donations experienced VVRs with both donation types. ^c)These P-values compare the VVR rates between male and female whole blood donors, and male and female apheresis plasma donors. ^d)These P-values compare the rates of VVRs during summer versus the other three seasons combined for whole blood and apheresis plasma donations. ^e)These P-values compare the re-donation rates between whole blood and apheresis plasma donors donors with and without VVRs.

Abbreviations: VVR, vasovagal reaction; IQR, interquartile range.