Table 3.

Coefficient Estimates and 95% Credible Intervals (CI) for Bayesian Models to Explain Variation in Cotinine Levels Among Pregnant Mothers Using Neighborhood Deprivation and Covariates for All Cotinine Levels and Stratified by Cotinine Level

	All cotinine levels			Cotinine < 3			Cotinine ≥3
Parameter	β	2.5% CI	97.5% CI	β	2.5% CI	97.5% CI	β	2.5% CI	97.5% CI
Intercept	0.699	−0.184	1.617	−1.043	−1.626	−0.407	2.385	1.176	3.579
NDI	0.166	0.079	0.258	0.046	−0.005	0.102	0.110	0.002	0.205
Age	0.004	−0.021	0.029	0.000	−0.018	0.016	0.052	0.011	0.092
Race/ethnicity
Black	−0.325	−0.685	0.024	−0.009	−0.248	0.224	−0.450	−0.993	0.066
Hispanic	−1.686	−2.204	−1.170	−0.215	−0.548	0.097	−1.680	−2.665	-0.683
Other	−0.698	−1.313	−0.074	−0.390	−0.792	0.005	−1.343	−2.424	-0.224
Education
High school	−0.853	−1.289	−0.410	0.029	−0.284	0.340	−0.399	−0.919	0.085
Some college	−0.944	−1.397	−0.490	−0.059	−0.376	0.242	−0.393	−0.934	0.112
College	−1.855	−2.345	−1.358	−0.121	−0.454	0.184	−1.221	−2.077	−0.356
Missing	−1.018	−2.141	0.009	0.437	−0.275	1.224	−1.285	−2.622	0.002
Marital status
Married	−0.452	−0.877	−0.020	−0.179	−0.462	0.087	−0.186	−0.819	0.408
Living with partner	0.386	−0.015	0.796	0.103	−0.167	0.388	0.185	−0.270	0.665
Divorced/separated	0.528	−0.212	1.322	0.253	−0.277	0.835	0.419	−0.416	1.334
Other	−0.059	−1.005	0.869	-0.152	−0.847	0.511	0.583	−0.531	1.810
Missing	0.397	−0.597	1.503	−0.109	−0.870	0.601	0.953	−0.255	2.236