The relation between cigarette smoking with delivery outcomes. An evaluation of a database of more than nine million deliveries

Ido Feferkorn; Ahmad Badeghiesh; Haitham Baghlaf; Michael H. Dahan

doi:10.1515/jpm-2021-0053

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The relation between cigarette smoking with delivery outcomes. An evaluation of a database of more than nine million deliveries

Ido Feferkorn , Ahmad Badeghiesh , Haitham Baghlaf und Michael H. Dahan

Veröffentlicht/Copyright: 30. Juli 2021

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Aus der Zeitschrift Journal of Perinatal Medicine Band 50 Heft 1

Abstract

Objectives

Smoking in pregnancy is associated with an increased risk of preterm birth (PTB), intrauterine growth restriction, placental abruption and perinatal death. The association between smoking and other delivery outcomes, such as chorioamnionitis, mode of delivery or postpartum hemorrhage (PPH), however, is insufficient as only few studies addressed these issues. The aim of the study was to evaluate the association between prenatal smoking and delivery outcomes in a large database, while controlling for confounding effects.

Methods

A retrospective population-based study using data from the Healthcare Cost and Utilization Project-Nationwide Inpatient Sample (HCUP‐NIS). A dataset of all deliveries between 2004 and 2014 (inclusively) was created. Our control group included all pregnant women who did not smoke during pregnancy, which was compared to pregnant women who smoked. A multivariate logistic analysis was conducted, adjusting for any statistically significant confounding effects.

Results

Our study identified 9,096,788 births between 2004 and 2014. Of which, 443,590 (4.8%) had a documented diagnosis of smoking. A significantly higher risk was found for PTB (odds ratio 1.39, CI 1.35–1.43), preterm premature rupture of membranes (odds ratio 1.52, CI 1.43–1.62) and small for gestational age (SGA) neonates (odds ratio 2.27, CI 2.19–2.35). The risks of preeclampsia (odds ratio 0.82, CI 0.78–0.85), chorioamnionitis (odds ratio 0.88, CI 0.83–0.4), PPH (odds ratio 0.94 CI 0.9–0.98) and operative vaginal delivery (odds ratio 0.9, CI 0.87–0.94) were lower among smokers.

Conclusions

This large database confirms the findings of previous smaller studies, according to which smoking decreases the risk of preeclampsia while increasing the risk of PTB and SGA neonates. The current study also revealed a decreased risk for PPH as well as for chorioamnionitis among pregnant smokers.

Keywords: chorioamnionitis; operative vaginal delivery; post-partum hemorrhage; pregnancy complications; smoking

Corresponding author: Ido Feferkorn, Division of Reproductive Endocrinology and Infertility, McGill University Health Care Center, Montreal, QC, Canada, E-mail: ido.feferkorn@mail.mcgill.ca

Research funding: None declared.
Author contributions: All authors have accepted responsibility for the entire content of this manuscript and approved its submission.
Competing interests: Authors state no conflict of interest.
Informed consent: NA.
Ethical approval: NA (According to the Tri-Council Policy Statement (2018), Institutional Review Board approval was not required as exclusively publicly available anonymized data was used for this study).

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Received: 2021-02-04

Accepted: 2021-06-25

Published Online: 2021-07-30

Published in Print: 2022-01-27

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Artikel in diesem Heft

https://doi.org/10.1515/jpm-2021-0053

Schlagwörter für diesen Artikel

chorioamnionitis; operative vaginal delivery; post-partum hemorrhage; pregnancy complications; smoking