TABLE 2.

Correlations between serum antibody responses and lesion and culture scores in pigs at bleeding (T3) and necropsy time (T4) using bPPD ELISA (anti-pig IgG and anti-pig IgM), DPP WildTB, and DPP VetTB tests

Antibody responses for test and time	Data type	Total lesion score	Thorax lesion score	Total culture score	Thorax culture scorea
OD for bPPD ELISA (time)
Anti-IgM (T3)	Correlation coefficient	0.689b	0.545c	0.573c	0.652b
	2-tailed significance	0.001	0.016	0.01	0.002
	n	19	19	19	19
Anti-IgM (T4)	Correlation coefficient	0.484c	0.356	0.523c	0.848b
	2-tailed significance	0.036	0.135	0.022	0
	n	19	19	19	19
Anti-IgG (T3)	Correlation coefficient	0.657b	0.537c	0.585b	0.670b
	2-tailed significance	0.002	0.018	0.009	0.002
	n	19	19	19	19
Anti-IgG (T4)	Correlation coefficient	0.394	0.29	0.449	0.777b
	2-tailed significance	0.095	0.229	0.054	0
	n	19	19	19	19
DPP for DPP WildTB mixture of MPB70 and MPB83 proteins at time:
T3	Correlation coefficient	0.436	0.272	0.630b	0.479c
	2-tailed significance	0.071	0.276	0.005	0.044
	n	18	18	18	18
T4	Correlation coefficient	0.382	0.211	0.537c	0.348
	2-tailed significance	0.107	0.387	0.018	0.144
	n	19	19	19	19
DPP for DPP VetTB MPB83, CFP-10/ESAT-6 at time:
T3	Correlation coefficient	0.305	0.141	0.506b	0.304
	2-tailed significance	0.204	0.566	0.027	0.206
	n	19	19	19	19
T4	Correlation coefficient	0.34	0.2	0.496c	0.705b
	2-tailed significance	0.154	0.411	0.031	0.001
	n	19	19	19	19

^aNonparametric Spearman correlations.

^bSignificant at the 0.01 level.

^cSignificant at the 0.05 level.