Objectives: This report presents detailed pregnancy rates for 1990-2004, updating a national series of rates extending since 1976. Data from the National Survey of Family Growth (NSFG) are used to interpret trends in teenage pregnancy and in total pregnancy and fertility rates.
Methods: Tabular and graphical data on pregnancy rates by age, race and Hispanic origin, and by marital status are presented and described. Birth data are from the birth registration system for all births registered in the United States and reported by state health departments to the National Center for Health Statistics; abortion data are from the Guttmacher Institute and the National Center for Chronic Disease Prevention and Health Promotion, Centers for Disease Control and Prevention; and fetal loss estimates are from pregnancy history information collected by the NSFG.
Results: In 2004 an estimated 6,390,000 pregnancies resulted in 4.11 million live births, 1.22 million induced abortions, and 1.06 million fetal losses. The estimated pregnancy rate for 2004 was 103.0; the rate varied little between 1995 and 2004. The teenage pregnancy rate dropped 38 percent during 1990-2004, reaching an historic low of 72.2 pregnancies per 1,000 women aged 15-19 years. Rates for younger teenagers declined relatively more than for older teenagers.
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BMC Pregnancy Childbirth
January 2025
Reproductive Medicine Center, Department of Obstetrics and Gynecology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, 325000, China.
Background: Insulin resistance (IR) is a common pathophysiologic feature in patients with polycystic ovary syndrome (PCOS). However, there have been no studies investigating the association of IR surrogates with pregnancy outcomes in women with PCOS undergoing in vitro fertilization (IVF). Therefore, we explored the association between these factors among PCOS patients.
View Article and Find Full Text PDFJ Pediatr Adolesc Gynecol
January 2025
Department of Pediatrics, West Virginia University School of Medicine, Morgantown, West Virginia, 26506.
Study Objective: Despite falling teen birth rates in the United States, there is a disproportionate burden of teen births in rural regions. The study aims to investigate the characteristics of teenage mothers and examine the relationships between teen birth and adverse birth outcomes in the rural Appalachian state of West Virginia (WV).
Methods: Data was obtained from a population-based cohort (Project WATCH) of all singleton live births in WV between May 2018 and April 2023.
Midwifery
January 2025
School of Health, Education, Policing and Sciences, University of Staffordshire, UK.
Problem: Tongue tie is an added complication when breastfeeding, but little is known about the role tongue tie might play when breastfeeding twins.
Background: Twins are much less likely to be breastfed than singleton babies due to added complications regarding pregnancy, birth and ongoing care. Tongue tie can cause breastfeeding barriers including poor latch, inefficient milk transfer and nipple pain.
Hum Immunol
January 2025
Stem Cell Research Center, Tabriz University of Medical Sciences, Tabriz, Iran. Electronic address:
Background: Recurrent pregnancy loss (RPL) remains a complex and challenging reproductive issue often associated with immunological abnormalities. This study investigates the immunomodulatory effects of intradermal lymphocyte therapy in RPL patients, exploring cellular, molecular, and cytokine changes, with specific attention to individuals with positive anti-thyroid peroxidase antibodies (Anti-TPO).
Methods: The study included 105 patients with RPL, divided into Anti-TPO positive RPL patients (n = 25), Anti-TPO negative RPL patients (n = 38), and RPL patients without lymphocyte immunotherapy (LIT) (n = 42).
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