Table III. Correlations between anti-HBs levels at 1 and 2 y of age and HBsAg-specific CMI at 1 y of age

CMI Parameter at age 1 y	Correlation Coefficient^a (Rho) to Anti-HBs Levels at 1 y (n)	p Value (Two-Tailed)	Correlation Coefficient^a (Rho) to Anti-HBs Levels at 2 y (n)	p Value (Two-Tailed)
Percentage of starting CD4 T cells that proliferated	0.115 (n = 76)	0.321	−0.001 (n = 72)	0.994
Percentage of starting CD8 T cells that proliferated	0.176 (n = 76)	0.129	0.179 (n = 72)	0.132
Percentage of IFN-γ⁺ proliferating CD4 T cells	0.170 (n = 63)	0.182	0.350 (n = 60)	0.006
Percentage of IL-13⁺ proliferating CD4 T cells	0.097 (n = 63)	0.447	0.106 (n = 60)	0.420
Percentage of IL-21⁺ proliferating CD4 T cells	0.068 (n = 63)	0.598	0.180 (n = 60)	0.169
IFN-γ secretion (pg/ml)	0.269 (n = 76)	0.019	0.302 (n = 72)	0.01
IL-10 secretion (pg/ml)	0.297 (n = 76)	0.009	0.088 (n = 72)	0.461
IL-13 secretion (pg/ml)	0.114 (n = 76)	0.325	−0.029 (n = 72)	0.812
TNF-α secretion (pg/ml)	0.091 (n = 76)	0.433	0.122 (n = 72)	0.308