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

Published in final edited form as: J Matern Fetal Neonatal Med. 2012 Apr 25;25(9):1690–1698. doi: 10.3109/14767058.2012.657279

Table 3.

Logistic regression analysis of Amnisure & Fibronectin tests in predicting Time-To-Spontaneous Delivery in patients with preterm labor and intact membranes

Test Result			Test to Spontaneous Delivery Duration
			< 48 hours (n=10) ^a		< 7 days (n=22) ^b		<14 days (n=27) ^c
			OR	CI	OR	CI	OR	CI
Amnisure Test (n=90)		(+)	9.7	2.2–43.3	7.0	2.0–24.1	9.4	2.4–36.4
Amnisure Test (n=90)		(−)	1		1		1
Fibronectin Test (n=64)		(+)	1.8	0.3–9.9	3.2	0.9–11.7	5.2	1.4–19.8
Fibronectin Test (n=64)		(−)	1		1		1
Fibronectin Test (+) (n=28)	Aminsure Test	(+)	1.6	0.2–15.1	1.4	0.2–8.4	1.7	0.3–9.7
Fibronectin Test (+) (n=28)	Aminsure Test	(−)	1		1		1
Fibronectin Test (−) (n=36)	Aminsure Test	(+)	35.6	1.1->999	365.1	4.0->999	365.1	4.0->999
Fibronectin Test (−) (n=36)	Aminsure Test	(−)	1		1		1

Note: All models adjusted for gestational length at time of test and cervical dilatation except those stratified by fibronectin result due to sample size restrictions;

Two patients who delivered preterm within 48 hours by augmentation of labor or cesarean delivery due to maternal- fetal indications were excluded from this analysis;

Two patients who delivered preterm within 7 days by augmentation of labor or cesarean delivery due to maternal- fetal indications were excluded from this analysis;

Two patients who delivered preterm within 14 days by augmentation of labor or cesarean delivery due to maternal- fetal indications were excluded from this analysis