. Author manuscript; available in PMC: 2013 Nov 1.

Published in final edited form as: Am J Obstet Gynecol. 2012 Aug 6;207(5):396.e1–396.e8. doi: 10.1016/j.ajog.2012.08.001

Table 4.

Relationship Between Selected Biomarkers of Preterm Birth at Epoch 1 to Gestational Age at Delivery

Analyte	N	Group	Hazard Ratio	R²	P

CRP ^*^¶	93	Placebo	1.05	0.34	0.06
CRH^*	78	Placebo	1.00	0.28	0.995
Progesterone^*	96	Placebo	1.00	0.26	0.36
17-OHP ^*	94	Placebo	1.04	0.20	0.44

CRP^** ^¶	81	17-OHPC	0.96	0.53	0.11
CRH^*	68	17-OHPC	1.00	0.19	0.55
Progesterone^**	82	17-OHPC	1.00	0.48	0.61
17-OHP^*	82	17-OHPC	0.997	0.14	0.96
17-OHPC^*	83	17-OHPC	1.14	0.49	0.001

adjusting for race/ethnicity, BMI and gestational age at blood draw

^**

adjusting for 17-OHPC, race/ethnicity, BMI and gestational age at blood draw

^¶

medians of each CRP quartiles