A Subgroup of Latently Mycobacterium tuberculosis Infected Individuals Is Characterized by Consistently Elevated IgA Responses to Several Mycobacterial Antigens

Table 3

Spearman correlation between the antibody performances for 53 individuals with LTBI^a.

Anti-AlaDH IgG	Anti-AlaDH IgA	Anti-19 kDa IgA	Anti-PstS3 IgA	Anti-MPT83 IgA
= 0.17 (0.1–0.42); = 0.22	= 0.93 (0.87–0.96); < 0.0001	= 0.91 (0.85–0.95); < 0.0001	= 0.82 (0.71–0.89); < 0.0001	= 0.89 (0.81–0.93); < 0.0001	anti-NarL IgA
—	= 0.21 (−0.06–0.46); = 0.13	= 0.26 (−0.01–0.49); = 0.064	= 0.31 (0.04–0.53); = 0.025	= 0.27 (0.0–0.50); = 0.052	anti-AlaDH IgG
—	—	= 0.96 (0.93–0.98); < 0.0001	= 0.86 (0.77–0.92); < 0.0001	= 0.83 (0.72–0.90); < 0.0001	anti-AlaDH IgA
—	—	—	= 0.88 (0.80–0.93); < 0.0001	= 0.83 (0.73–0.90); < 0.0001	anti-19 kDa IgA
—	—	—	—	= 0.88 (0.80–0.93); < 0.0001	anti-PstS3 IgA

Spearman’s coefficient of rank correlation (95% CI for ).