Table 2.

Inter-assay Pearson correlations for H3N2 vaccine strains.

IgA (μg/ml)	IgA/IgG (μg/ml)	IgA(μg/ml)/ Log2HAI Titer
14_D0	0.39**	Ns
14_D21	0.50***	Ns
15_D0	0.26*	ns
15_D21	0.32*	0.33*
16_D0	0.36**	ns
16_D21	0.42**	ns

n = 59 (24 young + 35 Elderly);

^*p < 0.05,

^**p < 0.01,

^***p < 0.001.