Table 4. Pearson product-moment correlation coefficient (r) between results obtained for recombinant proteins vs. TLA results for different patient groups.

ELISA test	GROUP	SAG2-GRA1-ROP1		SAG2-GRA1-ROP1-AMA1N		AMA1N-SAG2-GRA1-ROP1		AMA1C-SAG2-GRA1-ROP1		AMA1-SAG2-GRA1-ROP1
		r	p value	r	p value	r	p value	r	p value	r	p value
IgM	I	0.532	<0.001	0.654	<0.001	0.686	<0.001	0.624	<0.001	0.615	<0.001
	II	0.668	0.002	0.900	<0.001	0.614	0.007	0.689	0.002	0.668	0.002
	III	0.394	0.002	0.422	<0.001	0.515	<0.001	0.461	<0.001	0.329	0.012
	IV	0.714	<0.001	0.686	<0.001	0.551	<0.001	0.617	<0.001	0.753	<0.001
	All	0.774	<0.001	0.774	<0.001	0.827	<0.001	0.790	<0.001	0.764	<0.001
IgG	I	0.879	<0.001	0.796	<0.001	0.823	<0.001	0.915	<0.001	0.816	<0.001
	IIA	0.594	<0.001	0.795	<0.001	0.627	<0.001	0.624	<0.001	0.731	<0.001
	IIB	0.746	<0.001	0.830	<0.001	0.749	<0.001	0.757	<0.001	0.828	<0.001
	IIC	0.722	<0.001	0.762	<0.001	0.608	<0.001	0.582	<0.001	0.784	<0.001
	IIA-C	0.854	<0.001	0.901	<0.001	0.813	<0.001	0.793	<0.001	0.895	<0.001
	III	0.396	<0.001	0.467	<0.001	0.637	<0.001	0.443	<0.001	0.578	<0.001
	All	0.838	<0.001	0.921	<0.001	0.863	<0.001	0.887	<0.001	0.902	<0.001

Serum groups used in IgM ELISA test: I–suspected acute phase of T. gondii infection (IgM +; IgG +; low avidity), n = 48. II–chronic T. gondii infection with presence of IgM antibodies (IgM +; IgG +; high avidity), n = 18. III–chronic T. gondii infection with absence of IgM antibodies (IgM–; IgG+; high avidity), n = 58. IV–control group (IgM–; IgG–), n = 83. Serum groups used in IgG ELISA test: I–suspected acute phase of T. gondii infection (IgM +; IgG +; low avidity), n = 64. IIA–chronic T. gondii infection (IgM–; IgG >300 IU/ml; high avidity), n = 32. IIB–chronic T. gondii infection (IgM–; IgG 101–300 IU/ml; high avidity), n = 32. IIC–chronic T. gondii infection (IgM–; IgG ≤100 IU/ml; high avidity), n = 64. IIA-C–chronic T. gondii infection (IgM–; IgG +; high avidity), n = 128. III–control group (IgM–; IgG–), n = 137