Table 5.

Intra-assay Pearson correlations for H1N1 vaccine strains.

IgG (μg/ml)	14_D0	14_D21	15_D0	15_D21	16_D0
14_D21	0.76
15_D0	0.54	0.28
15_D21	0.38	0.22	0.75
16_D0	0.56	0.39	0.66	0.67
16_D21	0.48	0.29	0.56	0.55	0.75

N = 59, 24 young and 35 elderly; All values are significantly different from 0, p < 0.05, unless if highlighted in red.