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Table 3 Baseline characteristics associated with seroprotection post-vaccination (S2) versus not achieving seroprotection

From: Factors associated with maintenance of antibody responses to influenza vaccine in older, community-dwelling adults

Baseline characteristics H1N1 H3N2 B
Odds ratio* p value Odds ratio* p value Odds ratio* p value
Sex (Female vs Male) 3.5 <0.01 2.0 0.02 1.2 0.56
High risk medical condition (Yes vs No) 1.2 0.60 0.8 0.53 1.1 0.74
Recent illness or stressor (Yes vs No) 0.5 0.71 0.8 0.58 0.8 0.60
Site (Vanderbilt vs Marshfield) 0.4 0.01 1.0 0.96 0.5 0.01
  1. *Odds ratios all adjusted for variables in table plus age, BMI, and transformed S1 titer using multivariable logistic regression.