To provide an updated birth weight-for-gestational age (BW-for-GA) reference in the United States by using the most recent, nationally representative birth data with obstetric estimates of ...gestational age (GA).
We abstracted 3 285 552 singleton births between 22 and 42 weeks' gestation with nonmissing race and/or ethnicity, infant sex, parity, birth weight, and obstetric estimate of GA from the 2017 US natality files. We used 2 techniques (nonlinear, resistant smoothing 4253H and lambda-mu-sigma) to derive smoothed BW-for-GA curves and compared resulting BW-for-GA cut-points at the third, 10th, 90th, and 97th percentiles with US references from 1999 to 2009.
The smoothed BW-for-GA curves from both techniques overlapped considerably with each other, with strong agreements seen between the 2 techniques (>99% agreement; κ-statistic >0.9) for BW-for-GA cut-points at the third, 10th, 90th, and 97th percentiles across all GAs. Cut-points from 2017 using the lambda-mu-sigma method captured 9.8% to 10.2% of births <10th and >90th percentiles and 2.6% to 3.3% of births below the third and above the 97th percentile across all GAs. However, cut-points from US references in 1999 and 2009 (when GA was based on last menstrual period) captured a much larger range of proportions of 2017 births at these thresholds, especially among preterm and postterm GA categories.
We have provided an updated BW-for-GA reference in the United States using the most recent births with obstetric estimates of GA and information to calculate continuous measures of birth size that are sex or parity specific.
Este artículo presenta un análisis en perspectiva histórica de la Ley del 24 de enero de 1941 para la protección de la natalidad contra el aborto y la propaganda anticoncepcionista. Parte de la ...premisa de que la consideración del aborto como acto delictivo, si bien se ha mantenido en la legislación penal desde el comienzo de la contemporaneidad, también ha sido contingente a cada época histórica. Mediante la exégesis tanto de los textos penales, como de los discursos expertos (médico y jurídico), el presente artículo defiende que la norma franquista representó el punto álgido de la punición legal de la interrupción voluntaria del embarazo.
Abstract
Unauthorized immigration is one of the most contentious policy issues in the United States. In an attempt to curb unauthorized migration, many states have considered restrictive laws ...intended to make life so difficult for unauthorized immigrants that they would choose to leave the country. Arizona’s Senate Bill 1070, enacted in 2010, was a pioneering example of these efforts. Using population-level natality data and causal inference methods, we examined the effect of SB1070 on infants exposed before birth in Arizona. Prenatal exposure to the bill resulted in lower birth weight among Latina immigrant women, but not among US-born white, black, or Latina women. The decline in birth weight resulted from exposure to the bill being signed into law, rather than from its (limited) implementation. The findings indicate that the threat of a punitive law, even in the absence of implementation, can have a harmful effect on the birth outcomes of the next generation.
Synopsis ART‐mediated births declined between December 2020 and February 2021, followed by a rapid recovery to 2019 levels. In 2022, ART‐mediated births exceeded pre‐pandemic rates.
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This volume summarizes the major findings of the Princeton European Fertility Project. The Project, begun in 1963, was a response to the realization that one of the great social revolutions of the ...last century, the remarkable decline in marital fertility in Europe, was still poorly understood.
Originally published in .
ThePrinceton Legacy Libraryuses the latest print-on-demand technology to again make available previously out-of-print books from the distinguished backlist of Princeton University Press. These editions preserve the original texts of these important books while presenting them in durable paperback and hardcover editions. The goal of the Princeton Legacy Library is to vastly increase access to the rich scholarly heritage found in the thousands of books published by Princeton University Press since its founding in 1905.
Philosopher Fiona Wollard recently advocated interpreting the achievements of women while giving birth. People readily recognize men-related achievements, like running a marathon, but not ...achievements related to giving birth. We expand on Woollard's notion of reproductive achievements, comparing them with ideas of human enhancement, which aims at humans becoming "stronger and faster". Criticisms to evolutionary psychology challenge its defense of a notion of a fixed human nature, and its disregard for the experience of birth. Some female scholars link human evolution to the presence of premature infants requiring attention from mothers and alloparents. They explain why this gave an advantage to the human species, enhancing cooperation and other desirable traits. Other scholars develop philosophies of birth, mostly based on Arendt's conception of natality, questioning a human nature not sensitive to gender, excluding birth and childhood. Then we move to transhumanism, proponent of human enhancement. Transhumanism questions our biological inheritance for being flawed and outdated, including giving birth, restricting this to a source of great suffering. This assessment of the given does not consider its ambiguous, dialectical character. Because of that, tinkering with nature both accomplishes and frustrates the goals of human enhancement.
The COVID-19 baby bump in the United States Bailey, Martha J.; Currie, Janet; Schwandt, Hannes
Proceedings of the National Academy of Sciences - PNAS,
08/2023, Volume:
120, Issue:
34
Journal Article
Peer reviewed
Open access
We use natality microdata covering the universe of US. births for 2015 to 2021 and California births from 2015 through February 2023 to examine childbearing responses to the COVID-19 pandemic. We ...find that 60% of the 2020 decline in US fertility rates was driven by sharp reductions in births to foreign-born mothers although births to this group comprised only 22% of all US births in 2019. This decline started in January 2020. In contrast, the COVID-19 recession resulted in an overall "baby bump" among US-born mothers, which marked the first reversal in declining fertility rates since the Great Recession. Births to US-born mothers fell by 31,000 in 2020 relative to a prepandemic trend but increased by 71,000 in 2021. The data for California suggest that US births remained elevated through February 2023. The baby bump was most pronounced for first births and women under age 25, suggesting that the pandemic led some women to start families earlier. Above age 25, the baby bump was most pronounced for women aged 30 to 34 and women with a college education. The 2021 to 2022 baby bump is especially remarkable given the large declines in fertility rates that would have been projected by standard statistical models.
ObjectiveTo compare trends in pregestational (DM) and gestational diabetes (GDM) in pregnancy in rural and urban areas in the USA, because pregnant women living in rural areas face unique challenges ...that contribute to rural–urban disparities in adverse pregnancy outcomes.DesignSerial, cross‐sectional analysis.SettingUS National Center for Health Statistics (NCHS) Natality Files from 2011 to 2019.PopulationA total of 12 401 888 singleton live births to nulliparous women aged 15–44 years.MethodsWe calculated the frequency (95% confidence interval CI) per 1000 live births, the mean annual percentage change (APC), and unadjusted and age‐adjusted rate ratios (aRR) of DM and GDM in rural compared with urban maternal residence (reference) per the NCHS Urban–Rural Classification Scheme overall, and by delivery year, reported race and ethnicity, and US region (effect measure modification).Main outcome measuresThe outcomes (modelled separately) were diagnoses of DM and GDM.ResultsFrom 2011 to 2019, there were increases in both the frequency (per 1000 live births; mean APC, 95% CI per year) of DM and GDM in rural areas (DM: 7.6 to 10.4 per 1000 live births; APC 2.8%, 95% CI 2.2%–3.4%; and GDM: 41.4 to 58.7 per 1000 live births; APC 3.1%, 95% CI 2.6%–3.6%) and urban areas (DM: 6.1 to 8.4 per 1000 live births; APC 3.3%, 95% CI 2.2%–4.4%; and GDM: 40.8 to 61.2 per 1000 live births; APC 3.9%, 95% CI 3.3%–4.6%). Individuals living in rural areas were at higher risk of DM (aRR 1.48, 95% CI 1.45%–1.51%) and GDM versus those in urban areas (aRR 1.17, 95% CI 1.16%–1.18%). The increased risk was similar each year for DM (interaction p = 0.8), but widened over time for GDM (interaction p < 0.01). The rural–urban disparity for DM was wider for individuals who identified as Hispanic race/ethnicity and in the South and West (interaction p < 0.01 for all); and for GDM the rural–urban disparity was generally wider for similar factors (i.e. Hispanic race/ethnicity, and in the South; interaction p < 0.05 for all).ConclusionsThe frequency of DM and GDM increased in both rural and urban areas of the USA from 2011 to 2019 among nulliparous pregnant women. Significant rural–urban disparities existed for DM and GDM, and increased over time for GDM. These rural–urban disparities were generally worse among those of Hispanic race/ethnicity and in women who lived in the South. These findings have implications for delivering equitable diabetes care in pregnancy in rural US communities.
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The economic and reproductive medicine response to the coronavirus disease 2019 (COVID-19) pandemic in the USA has reduced the affordability and accessibility of fertility care. What is the impact of ...the 2008 financial recession and the COVID-19 recession on fertility treatments and cumulative live births?
The study examined annual US natality, Centers for Disease Control and Prevention IVF cycle activity and live birth data from 1999 to 2018 encompassing 3,286,349 treatment cycles, to estimate the age-stratified reduction in IVF cycles undertaken after the 2008 financial recession, with forward quantitative modelling of IVF cycle activity and cumulative live births for 2020 to 2023.
The financial recession of 2008 caused a 4-year plateau in fertility treatments with a predicted 53,026 (95% confidence interval CI 49,581 to 56,471) fewer IVF cycles and 16,872 (95% CI 16,713 to 17,031) fewer live births. A similar scale of economic recession would cause 67,386 (95% CI 61,686 to 73,086) fewer IVF cycles between 2020 and 2023, with women younger than 35 years overall undertaking 22,504 (95% CI 14,320 to 30,690) fewer cycles, compared with 4445 (95% CI 3144 to 5749) fewer cycles in women over the age of 40 years. This equates to overall 25,143 (95% CI 22,408 to 27,877) fewer predicted live births from IVF, of which only 490 (95% CI 381 to 601) are anticipated to occur in women over the age of 40 years.
The COVID-19 recession could have a profound impact on US IVF live birth rates in young women, further aggravating pre-existing declines in total fertility rates.
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