TABLE 3.

Estimated maximum likelihood coefficients of the negative binomial regression model fitted to the recovery data^a

Parameter	Negative binomial regression model
	Coefficient	P value	95% CIb
Intercept	−0.91	0.005	−1.08, −0.73
Concn (no. of oocysts/g of feces)	−0.00044	<0.001	−0.0007, −0.00013
α	0.091	<0.001	0.047, 0.18

^an = 36. Log likehihood for estimated model, −154.4.

^b95% CI, 95% confidence interval.