Table 1.
Study Population | DT Ab Titer, Mean (SD) IU/mL | DT Ab Half-life (95% CI), y | TT Ab Titer, Mean (SD), IU/mL | TT Ab Half-life (95% CI), y |
---|---|---|---|---|
All | 0.35 (0.6) | 27 (18–51) | 3.6 (4.6) | 14 (11–17) |
Men | 0.31 (0.39) | 21 (14–46) | 3.89 (5.24) | 14 (11–19) |
Women | 0.37 (0.68) | 42 (20–∞) | 3.46 (4.26) | 13 (10–18) |
Abbreviations: Ab, antibody; CI, confidence interval; DT, diphtheria toxin; SD, standard deviation; TT, tetanus toxin.
a Antibody titers to DT or TT were determined from 546 subjects (187 men and 359 women). Antibody half-life estimations (in years) were based on 392 subjects from whom data was available (134 men and 258 women).