A standardized template for clinical studies in preterm birth

Area of Science:

• Obstetrics and Gynecology
• Neonatal Medicine
• Clinical Research Methodology

Background:

• Preterm birth is a leading cause of neonatal morbidity and mortality globally.
• It's a complex condition with diverse clinical phenotypes and etiologies.
• Current research is hindered by inconsistent study designs, definitions, and data heterogeneity.

Purpose of the Study:

• To provide a harmonized, open-source template for designing clinical studies on preterm birth.
• To standardize definitions, patient phenotyping, and data collection for improved research comparability.
• To facilitate more robust meta-analyses and clinical translation of preterm birth data.

Main Methods:

• Recommendations for standardized clinical definitions and preterm birth phenotypes (infection, uterine overdistension, hemorrhage, stress, idiopathic).
• Guidelines for selecting study populations, control groups, and identifying confounding factors (e.g., maternal conditions, multifetal pregnancy).
• Provisions for study design, sample size calculations, and essential data set requirements.

Main Results:

• Identified five key preterm birth phenotypes: infection, uterine overdistension, hemorrhage, stress, and idiopathic.
• Outlined critical confounding factors: maternal medical conditions, obesity, antenatal glucocorticoids, multifetal pregnancies, and fetal sex.
• Provided universal guidelines for study design, sample size, and clinical data acquisition.

Conclusions:

• Adopting this harmonized template will enhance study protocol compatibility.
• It will enable direct comparison of data from different preterm birth studies.
• Facilitates pooling of samples and data sets for more meaningful and powerful meta-analyses.