BackgroundSeveral studies indicate that female obesity increases the risk of spontaneous abortion (SAB). Central adiposity, height, and location of typical weight gain have not been examined as risk factors for SAB. MethodsWe examined the associations between selected anthropometric factors and risk of SAB among 5132 women enrolled in a Danish Internet-based prospective cohort study of pregnancy planners. We used Cox proportional hazards regression models, with gestational weeks as the time scale, to compute hazard ratios (HRs) of SAB and 95% confidence intervals (CIs). ResultsAfter adjustment for potential confounders, the HRs for SAB among underweight (body mass index (BMI, kg/m(2)) <20), overweight (BMI: 25-29) and obese (BMI 30) women were 1.00 [95% CI: 0.81, 1.24], 0.90 [95% CI: 0.73, 1.09] and 1.23 [95% CI: 0.98, 1.54], respectively, compared with normal weight women (BMI 20-24). The association between obesity and SAB was stronger for early SAB (<8 weeks gestation); HR: 1.34 95% CI: 1.01, 1.77. The HR for height 174cm vs. <166cm was 0.81 [95% CI: 0.66, 1.00]. Increased waist-to-hip ratio (WHR) was inversely associated with risk of SAB (HR: 0.81; 95% CI: 0.63, 1.05). Waist circumference and location of typical weight gain were not appreciably associated with SAB risk. ConclusionsThis study confirms previous studies that have shown a small positive association between obesity and SAB risk. Our results suggest that obesity is a stronger risk factor for early pregnancy losses, and that small stature and low WHR are associated with an increased risk of SAB
Body Size and Risk of Spontaneous Abortion among Danish Pregnancy Planners
Hahn, KA., Hatch, EE., Rothman, K., Mikkelsen, EM., Brogly, SB., Sorensen, HT., Riis, AH., & Wise, LA. (2014). Body Size and Risk of Spontaneous Abortion among Danish Pregnancy Planners. Paediatric and Perinatal Epidemiology, 28(5), 412-423. https://doi.org/10.1111/ppe.12142
Abstract
Publications Info
To contact an RTI author, request a report, or for additional information about publications by our experts, send us your request.
Meet the Experts
View All ExpertsRecent Publications
Article
What's in a name? A data-driven method to identify optimal psychotherapy classifications to advance treatment research on co-occurring PTSD and substance use disorders
Article
Grandi Byen-supporting child growth and development through integrated, responsive parenting, nutrition and hygiene
Article
Effects of additional context information in prescription drug information sheets on comprehension and risk and efficacy perceptions
Article