Fig. 2
From: Factors affecting the immunogenicity of influenza vaccines in human
Rank-Sum Test of Antibody Fold Change. Comparison of antibody fold changes against 4 vaccine strains. (a ~ d) Comparison of antibody fold changes between male and female participants against 4 vaccine strains. (e ~ h) Comparison of antibody fold changes between participants with and without vaccination history against 4 vaccine strains. (i ~ l) Comparison of antibody fold changes between participants with and without chronic diseases against 4 vaccine strains. (m ~ p) Comparison of antibody fold changes among participants in 4 age groups against 4 vaccine strains. (q ~ t) Comparison of antibody fold changes among participants with 4 types of frequency of colds against 4 vaccine strains