Risk of preterm birth among women using drugs during pregnancy with elevated α-fetoprotein

R. J. Baer, C. D. Chambers, K. K. Ryckman, S. P. Oltman, M. E. Norton, L. L. Jelliffe-Pawlowski

Research output: Contribution to journalArticlepeer-review

Abstract

Objective:Examine the risk of preterm birth (PTB) among women who use drugs during pregnancy and have elevated-fetoprotein (AFP).Study Design:The sample included California singleton live births in 2005 to 2010 contained within a hospital discharge database linked to the Prenatal Screening Program. A selection of mothers who did not use drugs was selected at a ratio of 4:1. Risk of PTB was calculated using adjusted odds ratios and 95% confidence intervals (CIs) for women who did or did not use drugs by their AFP percentile.Results:We identified 7190 women who used drugs and selected 28 760 women who did not. Of women using cocaine with AFP ≥95th percentile, 43.8% delivered prematurely. Women using drugs with AFP ≥95th percentile were 11 to 35 times as likely to deliver <32 weeks.Conclusion:The combination of drug use and elevated AFP results in high rates of PTB. This combination results in an additive risk.

Original languageEnglish (US)
Pages (from-to)220-225
Number of pages6
JournalJournal of Perinatology
Volume37
Issue number3
DOIs
StatePublished - Mar 1 2017

ASJC Scopus subject areas

  • Pediatrics, Perinatology, and Child Health
  • Obstetrics and Gynecology

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