TABLE 1 

Patient baseline characteristics of challenged and eligible subjects by HAI titer group (n = 65)

Characteristic No. of subjects or age (%, unless IQR is specified)
High titer (n = 25)Low titer (n = 40)
Gender
    Female14 (56)19 (48)
    Male11 (44)21 (52)
Race
    Asian2 (8)3 (8)
    Black6 (24)19 (48)
    White17 (68)18 (44)
Hispanic or Latino ethnicity
    Yes4 (16)3 (8)
    No21 (84)37 (92)
Age, yr [median (IQR)]a27 (24, 31)27.5 (24, 30.5)
  • a IQR, interquartile range.