Table 2.
Associations of vaccination history factors and humoral responses
| Measles IU/mL | Mumps Index | Tetanus IU/mL | Pertussis IU/mL | Anthrax μg/mL | HBs IU/L | |
|---|---|---|---|---|---|---|
| Age at Last Vaccination (Years)a | r = 0.02 | r = 0.03 | r = 0.05* | n/a | r = 0.08** | r = − 0.08* |
| Military-recorded Vaccinationsa | r = 0.03 | r = 0.03 | r = 0.08** | n/a | r = 0.39*** | r = 0.09** |
| Years Since Last Vaccinationa | r = − 0.03 | r = − 0.04 | r = − 0.04 | r = − 0.09**,b | r = − 0.41** | r = − 0.06* |
a
r values are calculated with Spearman’s correlation.
*
p<0.05,
**
p<0.01,
***
p<0.001
b
Age at sample collection was used as an approximation of years since last vaccination