. Author manuscript; available in PMC: 2016 Mar 1.

Published in final edited form as: J Addict Med. 2015 Mar-Apr;9(2):111–117. doi: 10.1097/ADM.0000000000000101

Table 4.

Multiple logistic regression of preterm delivery (<37 weeks)

Variable	aOR (95% CI)	p-value
Insufficient prenatal care (<5 visits)	2.11 (0.77–5.49)	0.14
Chronic Hypertension	3.53 (0.68–16.40)	0.13
Pre-eclampsia	2.30 (0.38–10.64)	0.33
Diabetes	2.27 (0.60–7.32)	0.21
Other drugs	2.40 (1.01–6.00)	0.048
MA-positive at delivery	3.54 (1.02–11.66)	0.046
Delayed prenatal care (per week)	1.07 (1.01–1.15)	0.043

aOR=adjusted odds ratio, CI=confidence interval.