Table 2.

Difference in the number of days from infection to confirmed positive test result between the two serum types (unheated versus heated) within each antigen test

Antigen Test	Difference in # Days from Infection to Positive Resulta Unheated – Heated							p-value
	N	Mean (days)	SDb	Min	Max	95% CIc
						L d	U d
DiroCHEK®	12	35.7	32.2	0	90	15.2	56.2	0.0028*
PetChek®	12	31.3	25.5	0	70	15.0	47.5	0.0014*

*Statistically significant at P < 0.05

^aBig Head™ and JYD-34 isolate data were combined for each analysis

^b SD standard deviation

^c95% CI = 95% Confidence Interval around the mean difference

^d L lower bound of 95% confidence interval, U upper bound of 95% confidence interval