. Author manuscript; available in PMC: 2015 Feb 18.

Published in final edited form as: Birth Defects Res A Clin Mol Teratol. 2014 Feb 18;100(2):100–106. doi: 10.1002/bdra.23223

Table 3.

Odds Ratios for ferritin concentration and other variables as independent risk factors for being a mother of an NTD-affected child using a logistic regression model

Variables	Maximum Likelihood Estimates	Standard Error	Wald Chi-Square	Odds Ratio Estimates	95% Confidence Limits		P
Variables	Maximum Likelihood Estimates	Standard Error	Wald Chi-Square	Odds Ratio Estimates	Lower	Upper	P
Hemoglobin	−0.00195	0.1461	0.0002	0.998	0.750	1.329	0.9894
Ferritin	0.00246	0.00697	0.1243	1.002	0.989	1.016	0.7244
Ferritin Deficient (<12 μg/L) vs Sufficient (≥12 μg/L)	0.1022	0.3001	0.1159	1.108	0.615	1.994	0.7335
Red Cell Folate	−0.00150	0.000523	8.2476	0.998	0.997	1.000	0.0041
Plasma Folate	−0.0354	0.0185	3.6683	0.965	0.931	1.001	0.0555
Vitamin B12	−0.00478	0.00213	5.0344	0.995	0.991	0.999	0.0248
Homocysteine	0.0380	0.0359	1.1248	1.039	0.968	1.114	0.2889
Creatinine	−0.0321	0.0198	2.6229	0.968	0.932	1.007	0.1053