The preterm prediction study: the value of new vs standard risk factors in predicting early and all spontaneous preterm births. NICHD MFMU Network.
R L Goldenberg,
J D Iams,
B M Mercer,
P J Meis,
A H Moawad,
R L Copper,
A Das,
E Thom,
F Johnson,
D McNellis,
M Miodovnik,
J P Van Dorsten,
S N Caritis,
G R Thurnau and
S F Bottoms
University of Alabama at Birmingham, Department of Obstetrics and Gynecology 35294-7333, USA.
OBJECTIVES: This study was undertaken to determine the relationshipbetween fetal fibronectin, short cervix, bacterial vaginosis,other traditional risk factors, and spontaneous preterm birth.METHODS: From 1992 through 1994, 2929 women were screened atthe gestational age 22 to 24 weeks. RESULTS: The odds ratiosfor spontaneous preterm birth were highest for fetal fibronectin,followed by a short cervix and history of preterm birth. Thesefactors, as well as bacterial vaginosis, were more stronglyassociated with early than with late spontaneous preterm birth.Bacterial vaginosis was more common--and a stronger predictorof spontaneous preterm birth--in Black women, while body massindex less than 19.8 was a stronger predictor in non-Black women.This analysis suggests a pathway leading from Black race throughbacterial vaginosis and fetal fibronectin to spontaneous pretermbirth. Prior preterm birth is associated with spontaneous pretermbirth through a short cervix. CONCLUSIONS: Fetal fibronectinand a short cervix are stronger predictors of spontaneous pretermbirth than traditional risk factors. Bacterial vaginosis wasfound more often in Black than in non-Black women and accountedfor 40% of the attributable risk for spontaneous preterm birthat less than 32 weeks.
Related articles in AJPH:
Preterm birth: from prediction to prevention.
C Holzman and N Paneth
AJPH 1998 88: 183-184.
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