. Author manuscript; available in PMC: 2011 Sep 1.

Published in final edited form as: J Obstet Gynecol Neonatal Nurs. 2010 Sep;39(5):525–535. doi: 10.1111/j.1552-6909.2010.01169.x

Table 5.

Logistic regression models for birth outcomes

Dependent Variables	Independent Variables	β	Std err	χ²^a	Odds Ratio	95% CI
Premature Birth^b
Model 1	Maternal HN	0.08	0.13	5.94	1.1	.84 – 1.40
Model 2	Smoker	0.87	0.47	4.72	2.4	.80 – 6.71
	Passive	0.84	0.54		2.3	.96 – 5.96

Immediate Newborn^c
Complications
Model 1	Maternal HN	0.23^*	0.12	7.69	1.26	1.00 – 1.58
Model 2	Smoker	1.02^*	0.47	1.58	2.8	1.10 – 7.02
	Passive	0.88^*	0.4		2.4	1.09 – 5.33

RDS^c
Model 1	Maternal HN	0.32^*	0.13	10.5	1.4	1.06 – 1.78
Model 2	Smoker	1.36^**	0.51	2.52	3.9	1.61 – 14.9
	Passive	1.59^**	0.57		4.89	1.45 – 10.5

NICU Admission ^c
Model 1	Maternal HN	0.43^**		14	1.53	1.16 – 2.02
Model 2	Smoker	1.27^**	0.51	11.9	3.54	2.09 – 20.4
	Passive	1.88^**	0.58		6.53	1.29 – 9.70

Note: Hosmer-Lemeshow χ² : P

Note: Controlling age, education, ethnicity, gestational age, and prenatal conditions

Note: Controlling age, education, ethnicity, prenatal complications

p < .05

^**

p < .01