TABLE 1.

Distribution of OD values among IgG- and IgA-seropositive samples

Immunoglobulin type (n)	OD value
	Geometric mean (SD)	Median	Range	Interquartile range
IgG seropositive (81)	0.42 (2.24)	0.31	0.16-2.43	0.21-0.89
IgA seropositive (36)	0.23 (2.02)	0.18	0.10-1.22	0.13-0.35