OBJECTIVE: To emulate a target trial comparing surgical removal (hysterectomy, myomectomy, or no surgery) of uterine fibroids on atherosclerotic cardiovascular disease (CVD) risk. DESIGN: Retrospective cohort study leveraging Optum's deide…
Background/Objectives: To examine relationships between maternal-serum 25(OH)D levels at preconception and 8 weeks' gestation and the risk of vaginal bleeding and subchorionic hemorrhage during pregnancy. Methods: A secondary analysis of th…
OBJECTIVE: To examine associations of traditional healthy and fertility-focused preconception dietary patterns in female and male partners, individually and combined, with clinical fertility outcomes. DESIGN: Prospective cohort study. SUB…
OBJECTIVE: To evaluate associations between maternal serum 25-hyroxyvitamin D [25(OH)D] measured at both preconception and 8 weeks gestation and the risk of preeclampsia. STUDY DESIGN: A secondary analysis of the EAGeR Trial (2006-2012), w…
BACKGROUND: Uterine fibroids, a common gynaecologic condition, are often underdiagnosed, potentially biasing results in epidemiologic studies due to measurement error. OBJECTIVES: To examine how varying sensitivity in detecting uterine fib…
OBJECTIVE: To provide a framework for conducting rigorous nonrandomized studies of interventions in fertility treatment research, addressing their role as complements to randomized controlled trials (RCTs) in evaluating treatment outcomes. …
ObjectiveTo evaluate associations between preconception 25-hydroxyvitamin D (25(OH)D) levels and biomarkers in female and male partners on live birth (LB), pregnancy loss, and semen quality.DesignSecondary analysis using the folic acid and …
BACKGROUND: Caffeine is the most frequently used psychoactive substance in the United States and >90% of reproductive-age women report some amount of intake daily. Despite biological plausibility, previous studies on caffeine and fecundabil…
OBJECTIVE: This study aimed to examine whether prenatal low-dose aspirin (LDA) therapy affects risk of cesarean versus vaginal delivery. STUDY DESIGN: This study is a secondary analysis of the randomized clinical effects of aspirin in gest…
STUDY QUESTION: Is preconception leukocyte telomere length associated with fecundability, pregnancy loss and live birth among women attempting natural conception with a history of 1-2 prior pregnancy losses? SUMMARY ANSWER: Preconception l…
Evolutionary theory suggests that some animal species may experience shifts in their offspring sex ratio in response to maternal health and environmental conditions, and in some unfavorable conditions, females may be less likely to bear son…
OBJECTIVE: To characterize variation in circulating vascular endothelial growth factor (VEGF) and its receptor, soluble fms-like tyrosine kinase-1 (sFLT-1), across the menstrual cycle in normal ovulating women in relation to reproductive ho…
IMPORTANCE: Dietary supplements marketed for male fertility commonly contain folic acid and zinc based on limited prior evidence for improving semen quality. However, no large-scale trial has examined the efficacy of this therapy for improv…
Several autoimmune conditions have adverse effects on reproductive outcomes, but the relationship between family history of autoimmune disease in women without these conditions and pregnancy is uncertain. The objective of this study was to …
BACKGROUND: Opioids are commonly prescribed to women of reproductive age, including after delivery and miscarriage. However, to our knowledge, opioid use has not been frequently studied in relation to the common reproductive complications o…
BACKGROUND: Platelet activation may play a role in the pathophysiology of placenta-mediated obstetrical complications, as evidenced by the efficacy of aspirin in preventing preeclampsia, but published data regarding the relationship between…
OBJECTIVE: Obesity has become a major, worldwide public health issue and is associated with a greater risk of adverse pregnancy outcomes. Leptin, a hormone produced by adipocytes, is elevated in individuals with obesity and may mediate the …
Anti-müllerian hormone (AMH) is an established marker of ovarian reserve that decreases with age. Though the pool of ovarian follicles is established during fetal development, impacts of in utero exposures on AMH are uncertain. Thus, we sou…
OBJECTIVE: To prospectively investigate the association of selective serotonin reuptake inhibitor (SSRI) exposure through critical windows of pregnancy establishment with fecundability and pregnancy loss. DESIGN: Prospective cohort study u…
CONTEXT: Fatty acids (FAs) are important for reproductive processes, including steroidogenesis, though associations with fecundability, as measured by time to pregnancy (TTP), are unclear. OBJECTIVE: To investigate the relationship between…