Table 4.

Simple linear regression analysis evaluating the relationship between individual explanatory variables and two possible outcomes, diarrhea and the onset of fecal oocyst shedding.

Explanatory variable	Outcome = Diarrhea			Outcome = Onset of oocyst shedding
	B0 and B1	SE	P-value	B0 and B1	SE	P-value
Diarrhea
Intercept	–	–	–	8.8	0.7	<0.0001
Regression coefficient				−0.1	0.02	<0.0001*
Onset of fecal oocyst shedding
Intercept	61.0	6.3	<0.0001	–	–	–
Regression coefficient	−5.2	1.1	<0.0001*
Log dose
Intercept	10.5	4.5	0.03	8.7	0.6	<0.0001
Regression coefficient	6.2	1.4	0.0001*	−1.0	0.2	<0.0001*
Total protein on day 2
Intercept	67.4	36.0	0.07	5.2	6.1	0.4
Regression coefficient	−8.4	7.5	0.3	0.09	1.3	0.9
Weight on day 5
Intercept	3.9	17.3	0.8	9.5	2.5	0.0009
Regression coefficient	0.2	0.2	0.2	−0.04	0.02	0.1*
Weight at study completion
Intercept	−6.6	17.9	0.7	10.0	2.7	0.001
Regression coefficient	0.3	0.2	0.06*	−0.04	0.02	0.1*
Duration of fecal oocyst shedding
Intercept	28.6	14.4	0.06	9.8	1.8	<0.0001
Regression coefficient	0.3	1.3	0.8	−0.4	0.2	0.02*
Cessation of fecal oocyst shedding
Intercept	91.2	18.7	<0.0001	−0.18	2.9	1.0
Regression coefficient	−3.5	1.1	0.004*	0.3	0.2	0.05*
Log peak oocysts counted
Intercept	−13.4	51.8	0.8	17.4	6.9	0.02
Regression coefficient	5.8	6.6	0.4	−1.5	0.9	0.1*
Log total oocysts counted
Intercept	−38.5	52.3	0.5	13.5	7.3	0.08
Regression coefficient	8.9	6.6	0.2	−1.0	0.9	0.3

^*Explanatory variables with a P-value ≤ 1.0 were selected for inclusion in the multiple linear regression model.