Table 2.

Correlation between serogroup-polysaccharide specific IgG levels and functional antibody titers (rSBA) in serum measured before (T0), one month (T1) and one year (T2) after the vaccination

Serogroup	T0 R (95% CI), p-value	T1 R (95% CI), p-value	T2 R (95% CI), p-value	All R (95% CI), p-value
MenA	0.11 (− 0.03–0.24), 0.14	0.34 (0.22–0.46), < 0.001	0.26 (0.13–0.39), 0.002	0.78 (0.75–0.81), < 0.001
MenC	0.64 (0.58–0.69), < 0.001	0.82 (0.78–0.85), < 0.001	0.84 (0.81–0.86), < 0.001	0.96 (0.96–0.97), < 0.001
MenW	0.01 (− 0.13–0.15), 0.85	0.23 (0.09–0.35), 0.0013	0.29 (0.16–0.41), < 0.001	0.74 (0.70–0.77), < 0.001
MenY	0.24 (0.11–0.38), 0.001	0.19 (0.05–0.32), 0.007	0.25 (0.12–0.38), 0.001	0.76 (0.72–0.79), < 0.001

Note. Abbreviations: R Pearson correlation coefficient, CI confidence interval