Table 5. Correlation between FAVN and RFFIT/ELISA techniques in the non-boosted population.

Two years after vaccination (in 2007)
Non-boosted population, n	489
FAVN and RFFIT
GMT
FAVN	1.70
RFFIT	1.10
Pearson’s r	0.92
Subjects with titers >0.5 IU/ml
FAVN	422 (86.5%)
RFFIT	413 (84.6%)
κ	0.86
FAVN and ELISA
GMT
FAVN	1.70
ELISA	1.01
Pearson’s r	0.83
Subjects with titers >0.5 IU/ml
FAVN	422 (86.5%)
ELISA	387 (79.3%)
κ	0.61