Table 1.

Parameters of two equal-volume milk sample (EVMS) models based on optical density (OD) measured using two indirect ELISAs

Variable	Regression coefficient (standard error)	95% confidence interval of the regression coefficient	p-value
EVMS model based on sp-iELISA
Intercept	0.363 (0.074)	0.0.215 – 0.512	-
EVMS%POS	5.015 (0.254)	4.504 – 5.526	< 0.001
EVMS model based on TM/CA-iELISA
Intercept	4.477 (0.055)	4.367 – 4.587	-
ln(EVMS%POS)	0.719 (0.029)	0.661 – 0.778	< 0.001

ELISA used: sp-iELISA – Indirect ELISA based on a mixture of synthetic viral peptides, TM/CA-iELISA – Indirect ELISA based on recombinant transmembrane and capsid proteins