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Gestational age
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Journal Article
Demography (2020) 57 (1): 99–121.
Published: 29 January 2020
...Andrea M. Tilstra; Ryan K. Masters Abstract Birth weight in the United States declined substantially during the 1990s and 2000s. We suggest that the declines were likely due to shifts in gestational age resulting from changes in obstetric practices. Using restricted National Vital Statistics System...
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Includes: Supplementary data
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in Worth the Weight? Recent Trends in Obstetric Practices, Gestational Age, and Birth Weight in the United States
> Demography
Published: 29 January 2020
Fig. 2 Gestational age distribution of U.S. first-birth singletons (panel a) and change in probability of birth by gestational age (panel b), 1990 and 2013
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in Worth the Weight? Recent Trends in Obstetric Practices, Gestational Age, and Birth Weight in the United States
> Demography
Published: 29 January 2020
Journal Article
Demography (1998) 35 (4): 509–517.
Published: 01 November 1998
... because of the major flaws in gestational age measurement that exist in the type of data they use. An appropriate alternative is to apply a standard of normal intrauterine growth derived from antenatal estimation of fetal weight-for-gestational-age to the vital statistics data. 25 1 2011 ©...
Journal Article
Demography (1996) 33 (4): 469–481.
Published: 01 November 1996
... weight and gestational age, it is necessary to focus on a third dimension, maturity, in analyses of birth outcomes. Although clinical studies allow more precise classification, the small number of cases tends to result in unreliable estimates of rates and in loss of genera lizability. The fetal growth...
Journal Article
Demography (2000) 37 (4): 489–498.
Published: 01 November 2000
... measures of birth outcomes, identifies an optimal combination of birth weight and gestational age for infant survival, and estimates the effects of adverse birth outcomes in terms of their departure from this “optimal point.” We illustrate the advantages of this approach by estimating a logistic model...
Journal Article
Demography (2020) 57 (4): 1459–1481.
Published: 08 June 2020
... restricted by first trimester exposure to stress; reductions in gestational age and increases in the likelihood of being born at low ( < 2,500 grams) or very low ( < 1,500 grams) birth weight are induced by increased maternal psychological stress mid-pregnancy. This study also documents a positively...
Includes: Supplementary data
Journal Article
Demography (2011) 48 (4): 1473–1491.
Published: 26 August 2011
... and an increase in the proportion of low birth weight. This effect is focused on the first trimester of gestation, and it is mediated by reduced gestational age rather than by factors affecting the intrauterine growth of term infants. The findings highlight the relevance of understanding the early emergence...
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Journal Article
Demography (2021) 58 (3): 975–985.
Published: 01 June 2021
... of the upper age cutoff for DACA eligibility and using a difference-in-differences design, we find that DACA was associated with improvements in the rates of low birth weight and very low birth weight, birth weight in grams, and gestational age among Mexican immigrant mothers. Copyright © 2021 The Authors...
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Includes: Supplementary data
Journal Article
Demography (2012) 49 (2): 525–552.
Published: 28 February 2012
... prenatal care visits, premature birth, and small size for gestational age) do not predict educational attainment. Our measures explain little of the educational inequalities by parents’ class or education. However, smoking explains 12%—and all health variables together, 19%—of the lower educational...
Journal Article
Demography (2014) 51 (4): 1501–1525.
Published: 06 June 2014
... subgroups, especially children born to black mothers. However, no evidence exists that these effects are mediated by common measures of birth outcomes, including birth weight and gestational age. In 2011, the Federal Emergency Management Agency (FEMA 2014 ) reported 99 major disasters across the United...
Includes: Supplementary data
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in Worth the Weight? Recent Trends in Obstetric Practices, Gestational Age, and Birth Weight in the United States
> Demography
Published: 29 January 2020
Fig. 4 Birth weight difference, 2013 observed versus 2013 simulated, attributable to changes in gestational age exposure (panel a) and changes in gestational age composition (panel b).
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Journal Article
Demography (1999) 36 (3): 327–337.
Published: 01 August 1999
... become much smaller at full term; survival differences by age at conception and number of previous deliveries show relatively constant proportional hazards throughout gestation. Social inequalities in postpartum life chances have been documented previously, but we show that similar inequalities exist...
Journal Article
Demography (1998) 35 (4): 519–527.
Published: 01 November 1998
... Mortality Fetal Growth Birth Outcome Intrauterine Growth Retardation References Alexander , G.R. ( 1997 ). Annotation: The Accurate Measurement of Gestational Age—A Critical Step Toward Improving Fetal Death Reporting and Perinatal Health . American Journal of Public Health , 87 , 1278...
Journal Article
Demography (1975) 12 (1): 129–141.
Published: 01 February 1975
... and gestational ages of spontaneous fetal losses in the alleged absence of induced abortions and (2) the gestational ages of induced abortions in the presence of. competing miscarriage risks without, however, any direct infor- mation about the relative numbers or gestational ages of forestalling miscar- riages...
Journal Article
Demography (1993) 30 (3): 489–506.
Published: 01 August 1993
... in Reproductive Health Status . Demography , 27 , 457 – 466 . 10.2307/2061379 Hakim Rosemary , Tielsch James , & See Lai Chu ( 1992 ). Agreement Between Maternal Interview and Medical Record-based Gestational Age . American Journal of Epidemiology , 136 ( 5 ), 566 – 573...
Journal Article
Demography (2022) 59 (2): 587–605.
Published: 01 April 2022
... the distribution of infant deaths in the United States in 2012. The distributions have been plotted separately for preterm and full-term births, where preterm births are defined as those occurring before a gestational age of 37 full weeks from the last menstrual period. Irrespective of the prematurity of births...
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Includes: Supplementary data
Journal Article
Demography (2006) 43 (1): 185–201.
Published: 01 February 2006
... of Social and Political Violence on the Risk of Pregnancy Complications . American Journal of Public Health , 82 , 685 – 90 . 10.2105/AJPH.82.5.685 Zhang , J. , & Bowes , W.A. ( 1995 ). Birth-Weight-for-Gestational-Age Patterns by Race, Sex, and Parity in the United States...
Journal Article
Demography (1987) 24 (1): 43–60.
Published: 01 February 1987
... the effects of variations in gestational length on the relation between birth spacing and child mortality. Then we examine the hypothesis that the increased risks of mortality at high matemal ages, high birth orders, and short birth intervals can be overcome by women who have completed more years of education...
Journal Article
Demography (1994) 31 (1): 115–132.
Published: 01 February 1994
... and reasons for the abortion, is based on questions that the woman answered before the abortion. Other information, such as medical details of the abortion procedure and the gestational age of the fetus, are recorded by medical personnel after the abortion. The sample included 180 ethnic Estonians and 180 non...
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