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Table 3 Correlation between age and TB-related antibody responses

From: Comparison of antibody responses against Mycobacterium tuberculosis antigen Rv0679c in tuberculosis patients from the endemic and non-endemic regions of the Beijing genotype: a case control study

TB-related antibody test

AGE

C-PTB

C-HC

P-PTB

P-HC

TBGL

Anti-TBGL IgG

0.37 (0.012)a

0.42 (0.007)

n.s

0.66 (0.043)

Anti-TBGL IgA

n.s

n.s

n.s

0.37 (<0.0001)

Rv0679c

Anti-N-type IgG

n.s

n.s

n.s

−0.49 (0.006)

Anti-K-type IgG

n.s

n.s

n.s

−0.53 (0.003)

Anti-N-type IgA

n.s

n.s

n.s

−0.39 (0.031)

Anti-K-type IgA

n.s

n.s

n.s

−0.44 (0.016)

  1. aindicates that r (p) calculated as Spearman’s rank correlation coefficients; p < 0.05 indicates a significant correlation