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Natural log-transformed change (waning) of pneumococcal antibody levels over ∼1-yr period among all subjects
The p value for overall comparison based on non-parametric ANOVA test (Kruskal-Wallis test) was 0.031.
*The p values adjusted for multiple comparisons; adjusted p value for multiple comparison between tertile 2 and tertile 3 was 0.126.
25(OH)D = 25-hydroxyvitqamin D.
