Table 3.

Correlation of PCV2-specific antibodies in piglets at the time of vaccination and 4 weeks later in the four groups under study for each replicate

	Regression coefficient	Lower CI	Upper CI	p-value
Group A	0.521	0.218	0.825	<0.001
Group B	−0.088	−0.474	0.299	0.651
Group C	0.038	−0.215	0.290	0.766
Group D	0.777	0.500	1.055	<0.001

Group A: pigs vaccinated at 4 weeks; group B: pigs vaccinated at 6 weeks; group C: pigs vaccinated at 8 weeks; group D: non-vaccinated placebo/controls