Table 1. Posterior means (M) and SDs from bivariate Poisson and univariate logistic models fit to teratology data. Reference splotch allele group has neither parent with splotch allele.

	Bivariate Poisson model				Logistic model
	Complete data		Nonzero subset		Induced		Estimated
Part of model	M	SD	M	SD	M	SD	M	SD
With exencephaly
Intercept	−1.57	0.89	−2.15	0.96	−4.69	1.08	−5.20	1.21
Blood glucose level	0.0012	0.0011	0.0022	0.0012	0.0041	0.0014	0.0046	0.0016
Splotch allele group
Father	0.33	0.43	0.41	0.43	0.39	0.48	0.53	0.52
Mother	0.56	0.51	0.53	0.50	0.73	0.58	0.82	0.62
Without exencephaly
Intercept	2.78	0.46	2.53	0.45
Glucose level	−0.0024	0.00064	−0.0019	0.00063
Splotch allele group
Father	−0.027	0.21	0.013	0.21
Mother	−0.21	0.29	−0.20	0.28
Random effect variances
With exencephaly	0.64	0.31	0.53	0.25	0.81	0.34	0.87	0.48
Without exencephaly	0.24	0.082	0.20	0.063
Correlation	0.040	0.25	−0.12	0.24