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Table 6 Correlation between opsonophagocytic titers and antibody concentration.

From: Immune response to pneumococcal polysaccharides 4 and 14 in elderly and young adults. I Antibody concentrations, avidity and functional activity

  

CPS

CPS + PPS22F

P value

PPS4

Young

0.64

0.81

0.28

 

Elderly

0.69

0.79

0.51

PPS14

Young

0.90

0.88

0.78

 

Elderly

0.75

0.72

0.85

  1. Correlation coefficients of association (r values) between post-immunization opsonophagocytic titer and antibody concentration following absorption with CPS or CPS + 22F in young and elderly volunteers. There was no significant difference between absorption techniques by Fisher's Z transformation.