Background: The official WHO estimates of preterm birth are an essential global resource for assessing the burden of preterm birth and developing public health programmes and policies. This protocol describes the methods that will be used to identify, critically appraise and analyse all eligible preterm birth data, in order to develop global, regional and national level estimates of levels and trends in preterm birth rates for the period 1990 - 2014.
Methods: We will conduct a systematic review of civil registration and vital statistics (CRVS) data on preterm birth for all WHO Member States, via national Ministries of Health and Statistics Offices. For Member States with absent, limited or lower-quality CRVS data, a systematic review of surveys and/or research studies will be conducted. Modelling will be used to develop country, regional and global rates for 2014, with time trends for Member States where sufficient data are available. Member States will be invited to review the methodology and provide additional eligible data via a country consultation before final estimates are developed and disseminated.
Discussion: This research will be used to generate estimates on the burden of preterm birth globally for 1990 to 2014. We invite feedback on the methodology described, and call on the public health community to submit pertinent data for consideration.
Trial Registration: Registered at PROSPERO CRD42015027439 CONTACT: pretermbirth@who.int.
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http://dx.doi.org/10.1186/s12978-016-0193-1 | DOI Listing |
BMC Pregnancy Childbirth
January 2025
Genetic Program, North York General Hospital, Toronto, ON, Canada.
Background: Preeclampsia significantly impacts maternal and perinatal health. Early screening using advanced models and primary prevention with low-dose acetylsalicylic acid for high-risk populations is crucial to reduce the disease's incidence. This study assesses the feasibility of implementing preterm preeclampsia screening and prevention by leveraging information from our current aneuploidy screening program in a real-world setting with geographic separation clinical site and laboratory analysis site.
View Article and Find Full Text PDFAm J Obstet Gynecol MFM
January 2025
Department of Obstetrics and Gynecology, Macon and Joan Brock Virginia Health Sciences at ODU, Norfolk, VA, United States. Electronic address:
Background: Limited research exists on the association between preconception pro-inflammatory diets and adverse pregnancy outcomes, and this relationship remains poorly understood.
Objective: To investigate the association between preconception dietary inflammatory potential, as measured by the Dietary Inflammatory Index (DII), and adverse pregnancy outcomes in nulliparous individuals.
Methods: This was a secondary analysis of the data from the Nulliparous Outcomes Study: Mothers-to-be (nuMoM2b).
Pediatrics
January 2025
Division of Neonatology, Department of Pediatrics, McMaster University, Hamilton, ON, Canada.
Context: Extubation failure (EF) is common in preterm neonates and may be associated with adverse outcomes.
Objective: To systematically review and meta-analyze the existing literature on predictors and outcomes of EF in preterm neonates.
Data Sources: MEDLINE, Epub Ahead of Print, In-Process & Other Non-Indexed Citations, Embase (OvidSP), CINAHL (EBSCOHost), and Cochrane Library (Wiley) from 1995 onward.
Early Hum Dev
January 2025
Department of Women and Children's Health, St Thomas' Hospital, King's College London, London, UK; Department of Perinatal Imaging, St Thomas' Hospital, King's College London, London, UK.
Objectives: The aim of this study was to utilise T2* relaxometry (an indirect method of quantifying tissue oxygenation) to assess the fetal thymus in uncomplicated pregnancies throughout gestation and in a cohort of fetuses that subsequently deliver very preterm.
Methods: A control group of participants with low-risk pregnancies were recruited and retrospectively excluded if they developed any pregnancy related complications after scanning. Participants were recruited who were deemed to be at very high risk of delivery prior to 32 weeks' gestation and retrospectively excluded if they did not deliver prior to this gestation.
Matern Child Health J
January 2025
Office of the Director, Office of Readiness and Response, CDC, Atlanta, GA, USA.
Objectives: This study aimed to estimate the prevalence of homelessness shortly before or during pregnancy and describe differences in maternal characteristics and adverse birth outcomes between people reporting homelessness and not reporting homelessness.
Methods: We used 2016-2020 Pregnancy Risk Assessment Monitoring System (PRAMS) data from 31 sites to estimate the prevalence of self-reported homelessness during the 12 months before giving birth. We used logistic regression models to evaluate the association between homelessness and adverse birth outcomes, specifically small for gestational age (SGA), low birth weight (LBW), and preterm birth (PTB).
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