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Updated: Jun 16, 2026

A Novel Method for Involving Women of Color at High Risk for Preterm Birth in Research Priority Setting
Published on: January 12, 2018
Using 17 α-hydroxyprogesterone caproate to impact rates of recurrent preterm delivery in clinical practice
Andrei Rebarber1, Nathan S Fox, Chad K Klauser
1Maternal Fetal Medicine Associates, New York, NY 10029, USA. arebarber@mfmnyc.com
Objective:
Evaluation of an outpatient 17 α-hydroxyprogesterone caproate (17P) administration programme.
Methods:
A retrospective analysis of data collected from patients with a history of preterm birth (PTB) and current singleton gestation enrolled between 16.0 and 20.9 weeks' gestational age (GA) for weekly outpatient 17P administration and nursing assessment between 7/2004 and 12/2007 was conducted (n=3139).
Results:
The population was mostly white (50.3%), 18-35 years old (77.7%), and married (67.0%). Median GA at 17P initiation and stop was 17.4 (16.0, 20.9) weeks and 35.1 (18.6, 37.4) weeks. Mean injections per patient were 16.5±4.9, at an interval of 7.2 days. Median GA at delivery was 37.3 (18.6, 44.0) weeks. Rate of recurrent spontaneous PTB was 29.8%, with 15.5% and 7.0% with PTB at <35 and <32 weeks.
Conclusions:
This represents the largest cohort reported to date of patients prescribed 17P therapy in clinical practice to prevent recurrent spontaneous PTB.
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