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. 2011 Dec;18(12):2038–2042. doi: 10.1128/CVI.05354-11

Table 2.

Random-effects regression analysis for rate of change in log10 SBA titers

Model Parameter Coefficient 95% CI P value
1 Time (yr) since vaccination −0.036 −0.047 to −0.025 <0.0001
2 Time (yr) since vaccination −0.036 −0.047 to −0.025 <0.0001
Age (yr) at vaccination −0.042 −0.18 to 0.098 0.56